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Are Raw-Fed Dogs a Risk?

By
CJ Puotinen
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Delta Society is one of the largest and best-known organizations that registers and insures “pet therapy” volunteers and their companion animals. Pet/handler teams – known as Pet Partners – brighten lives in hospitals, nursing homes, group homes, schools, pre-kindergarten programs, libraries, jails, women’s shelters, homeless shelters, senior centers, adult day programs, and a host of other facilities.

But on May 19, Delta Society triggered a firestorm of controversy, complete with conspiracy theories, angry denunciations, frustration, and confusion, when it announced that effective June 30, “any dog or cat from a household where raw protein food is fed is not eligible to be a Delta Society Pet Partner.”

Delta’s Raw Protein Diet Policy raises serious questions about the safety of feeding raw food regardless of an animal’s pet-therapy status. Are raw-protein diets truly dangerous for dogs and the people who touch them? We think not. Should responsible owners reconsider their feeding plans? We say no. Here’s why.

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Delta suggests that even a dog or cat who eats a conventional commercial diet and shares a household with a raw-fed dog or cat may be ineligible to be a Pet Partner. “If a Pet Partner has access to the food or bowl used, it would be best to NOT feed any of the other pets raw meats. Inadvertent eating of raw meat or cross-contamination is very real.”

Delta’s board of directors believes that raw-fed animals pose a serious risk of infecting clients with zoonotic pathogens.  Its new policy statement concerning raw-fed Pet Partners asserts, “It is well known that animals fed raw diets (BARF or other) shed significant amounts of pathogenic bacteria, which studies have indicated may put some people at risk, as compared to pets being fed commercially prepared or cooked, home-made diets . . .

“Even healthy animals can shed pathogenic bacteria that can affect the human companion team member and others. Certain individuals are at increased risk of disease if they encounter various pathogens, particularly people that are immune-compromised, very young, or elderly. This basically describes most of the individuals Delta Society Pet Partners visit: Patients in hospitals, senior centers, nursing facilities, hospice care, rehabilitation facilities, and schools involving young children, among others.”

Delta acknowledges that dogs fed commercial or home-cooked diets can shed pathogenic bacteria, but believes these dogs pose a lower risk of bacterial shedding. Delta Society volunteers who feed commercial pet food or a home-cooked diet are unaffected by the organization’s new policy – but those who feed their animal companions raw protein must either change those diets or leave their Delta Society-sponsored volunteer work. If a Pet Partner does switch to a cooked or commerical diet, Delta suggests suspending therapeutic visits for a minimum of four weeks, because dogs can shed pathogenic bacteria for a variable amount of time.

The new policy
Delta’s policy change caught its many raw-feeding volunteers by surprise. How did Delta Society decide that raw-fed animals pose a health risk to the clients served by its program?

 On its website, Delta Society explains the rationale for its policy change: “Over the past few years, the increasing use of raw protein diets and the health concerns and controversy generated have grown, not only between the public and veterinarians, but often within the veterinary profession itself. After careful consideration of all of the known scientific facts, and on the unanimous advice of the Delta Society Medical Advisory Board, made up of internal medicine and public health experts from North America, the board of directors voted to preclude animals eating raw protein foods from participating in Delta Society Pet Partners program.”

Some raw feeders see an ominous connection between the development of the policy and the fact that Delta Society receives financial support from Purina. One of its Medical Advisory Group members, Deborah S. Greco, DVM, PhD, DACVIM, works for Nestle Purina Petcare in St. Louis, Missouri. Delta acknowledges Purina on its website, displaying the Purina logo under the statement, “Thank you to our incredible partner, the passionate pet lovers at Purina!”

Apparently anticipating that some would blame Delta’s link to Purina as the cause of its ban on raw-fed animal partners, Delta clarified:

What was the role of pet food manufacturers in the adoption of the Raw Protein Diet Policy?
  No pet food manufacturer representatives contacted, encouraged, lobbied, or influenced the Delta Society Medical Advisory Group in recommending to the board that they approve a Raw Protein Diet Policy.
. . . As board members learned of medical professionals’ concerns about the increased risk of the spread of pathogenic bacteria to humans by animals fed raw protein diets, it was determined that this was an issue that needed review. . . . As many of our Pet Partners visit in hospitals, assisted-living centers, and other places where people’s immune systems are compromised, it was decided that implementing this new policy was the responsible action.

A look at the pathogens
Delta Society’s Raw Protein Diet Policy explains, “Since many studies have shown pets fed such diets shed a significantly higher number of pathogenic bacteria, the risk is too great for inadvertent, but avoidable infection.” Here’s a look at the bacteria of concern.

According to the Centers for Disease Control (CDC) in Atlanta, Georgia, foodborne diseases cause approximately 76 million illnesses, 325,000 hospitalizations, and 5,000 deaths in the U.S. each year.

Salmonella, which causes nausea, vomiting, diarrhea, abdominal pain, fever, chills, headache, and blood in the stools, is the most common bacterial cause of foodborne outbreaks.

About half of all Salmonella infections occur in restaurant settings. According to the CDC, 1.4 million Americans contract Salmonella each year, but because mild cases are often dismissed as “stomach flu” and go unreported, the U.S. Food and Drug Administration (FDA) estimates that the annual number is more likely 2 to 4 million. About 1,000 people in the U.S. die of Salmonella infections each year.

In a series of articles published in 2008 about Salmonella outbreaks, the Journal of Food Protection reported that infections traced to specific restaurants are often linked to carriers (people who are infected but not symptomatic) who prepare food. No one knows how many Americans are asymptomatic carriers at any given time, but the number discovered by fecal testing is significant.

“Contamination most frequently occurs via the fecal-oral route when pathogens are present in the feces of ill, convalescent, or otherwise colonized persons,” says report author E.C. Todd. “It is difficult for managers of food operations to identify food workers who may be excreting pathogens, even when these workers report their illnesses, because workers can shed pathogens during the prodrome phase of illness or can be long-term excretors or asymptomatic carriers. Some convalescing individuals excreted Salmonella for 102 days. . . Regardless of the origin of the contamination, pathogens are most likely to be transmitted through the hands touching a variety of surfaces, highlighting the need for effective hand hygiene and the use of barriers [such as plastic gloves] throughout the work shift.”

Salmonella can contaminate meat, poultry, eggs, and milk, but it can also occur in fruits and vegetables, especially those that grow close to the ground or fall from trees to the ground (like nuts). Contaminated food manufacturing plants can spread the bacteria to all types of processed foods. Major Salmonella-related food recalls during the past six years involved almonds, Hershey and Cadbury chocolate bars, serrano peppers from Mexico, pistachio nuts, peanuts, peanut butter, Italian salami, and numerous products containing hydrolized vegetable protein (a flavor enhancer).

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Some pets are notorious carriers of Salmonella, especially snakes, turtles, and other reptiles.

Salmonella-contaminated pet food has also sickened humans who handled the food. In 2006, 79 human cases of Salmonella in 21 states, most involving very young children, were traced to a Mars Petcare plant in Pennsylvania. Mars recalled 23,109 tons of Salmonella-contaminated dry dog and cat food, sold under 105 brand names. Other recent pet food recalls involved Salmonella in pig ears, cow hooves, beef treats, and dog treats made with peanut butter.

In 2008, when eight additional human cases of Salmonella were traced to dry pet foods, Dr. Pascal James Imperato, dean and distinguished service professor of the graduate program in public health at State University of New York Downstate Medical Center in Brooklyn, told reporters, “There is greater industrialization of the production of food products, both for humans and animals, and these are complex processing systems. Therefore, there is greater opportunity for contamination. We are likely to see many more of these problems in the future.”

To help prevent infection, Dr. Imperato recommends regular washing of pet food bowls to prevent bacterial growth; the thorough washing of hands with soap and warm water for at least 20 seconds after handling dry pet foods, including pet treats; and scrupulously avoiding contact between dry pet foods and foods consumed by humans as well as food preparation surfaces and utensils. Keep infants away from pet feeding areas and prevent children younger than age five from touching or eating pet foods, treats, or supplements.

Escherichia coli (E. coli) bacteria cause severe cramps and are a leading cause of bloody diarrhea. Most E. coli infections come from ingesting contaminated meat, water, or dairy products, or working with cattle, but dangerous strains of E. coli can be present in fruits, vegetables, nuts, and processed foods. In 2006, E. coli in packaged fresh spinach killed three people and hospitalized more than 100. More recently, Consumers Union (publisher of Consumer Reports) announced that nearly half of the water and soda dispensers it tested at fast-food restaurants and 39 percent of the pre-washed, packaged salad greens it examined contained “unacceptable levels” of coliform (fecal) bacteria, which were likely to include both Salmonella and E. coli.
Clostridium difficile, often called C. difficile or “C. diff,” causes watery diarrhea, fever, loss of appetite, nausea, and abdominal pain or tenderness. Severe cases produce life-threatening inflammation of the colon. This bacterial infection commonly affects older adults in health care facilities and typically occurs after the use of antibiotics. In recent years, its infections have become more frequent, more severe, and more difficult to treat, making C. difficile a bane of hospitals and nursing homes.

Staphylococcus aureus, a common bacterium found on the skin and in the nasal cavities of up to 30 percent of healthy people and animals, can produce toxins that cause gastrointestinal food poisoning. Sliced meat, puddings, pastries, sandwiches, and other foods have caused Staphylococcal food poisoning. The most famous member of this bacterial family, methicillin-resistant Staphylococcus aureus (MRSA, pronounced MER-sa), is not considered a foodborne pathogen. This life-threatening “supergerm” is usually acquired in a hospital setting, though “community-acquired” MRSA is the more dangerous strain. (See “Defeating the Resistance,” WDJ January 2008.)
 
Bacterial shedding
According to the University of Wisconsin’s School of Veterinary Medicine’s website, “Salmonella spp. can be isolated from healthy dogs and cats at rates of up to 36 and 18 percent, respectively. Dogs and especially cats can shed Salmonella organisms in both their feces and saliva, meaning that transmission can occur via licking. Dogs and cats may suffer salmonellosis as a ‘reverse zoonosis,’ with infection transmitted from human-to-dog and subsequently back to other humans. Similarly, outbreaks of Salmonella infections in large animal teaching hospitals have been linked to the introduction of bacteria from infected human personnel, with subsequent spread to animals and then back to other human workers.”
Although dogs can contract salmonellosis, healthy dogs usually remain free from symptoms of infection even when they ingest Salmonella bacteria.

In a study reported in the Canadian Veterinary Journal in 2007, 7 of 16 research dogs given Salmonella-contaminated raw food shed salmonellae in their feces the following week. The remaining nine did not shed salmonellae, and none of the dogs exposed to the bacteria exhibited any symptoms of illness. Although the study’s size was very small, it suggests that most healthy dogs effectively neutralize Salmonella without colonizing or shedding the bacteria.

Delta Society Medical Advisory Board member J. Scott Weese, DVM, DVSc, DACVIM, of the Ontario Veterinary College at the University of Guelph in Canada, has co-authored several studies of zoonotic agents in Ontario-area dogs.

A 2006 cross-sectional study of 102 healthy visitation dogs tested their stool samples, hair brushings, and rectal, aural, nasal, oral, and pharyngeal swabs for 18 specific pathogens. Zoonotic agents were isolated from 80 of the dogs (80 percent), the primary agent being Clostridium difficile, which was present in 58 percent of the tested dogs.

Two studies published in 2009 tested therapy dogs for MRSA and C. difficile. In one, both MRSA and C. difficile may have been transferred to the fur and paws of canine visitors through patients handling and kissing the dogs, or through exposure to a contaminated healthcare environment. In the other, the rates of acquisition of MRSA and C. difficle were 4.7 and 2.4 times as high, respectively, among dogs who visited human healthcare facilities compared with rates among dogs involved in other animal-assisted interventions. Among dogs who visited human healthcare facilities, those who licked patients or accepted treats during visits were more likely to be positive for MRSA and C. difficile than were dogs who did not lick patients or accept treats.

Another study, co-authored by Dr. Weese and published in 2008, examined stool samples collected every two months for one year from 40 raw-fed therapy dogs and 156 therapy dogs who were not fed raw food. The study showed these positive test results:

■ Vanomycin-resistant enterococci: 0 raw-fed dogs (0 percent) and 1 cooked-food dog (0.6 percent)

■ MRSA: 1 raw-fed dog (2.5 percent) and 8 cooked-food dogs (5.1 percent)

■ Clostridium difficile: 5 raw-fed dogs (12.5 percent) and 40 cooked-food dogs (25.6 percent)

■ Salmonella: 19 raw-fed dogs (47.5 percent) and 12 cooked-food dogs (7.7 percent)

■ E. coli: 31 raw-fed dogs (77.5 percent) and 32 cooked-food dogs (20.1 percent)

Are these statistics significant? The studies’ samples are small and regional. They don’t differentiate between dogs fed ingredients from factory-farmed and pasture-fed animals (pasture-fed meat, poultry, and eggs have been shown to have significantly lower Salmonella and E. coli bacteria counts than the same ingredients from animals raised in confinement).
Neither do the studies consider infection control measures that are easily implemented in animal-assisted therapy programs or by therapy dog handlers at home. And rather than proving that raw-fed dogs are dangerous, the studies suggest that all dogs, regardless of diet, may be agents of infection.

Many dog lovers counter with questions about human visitors to health care facilities. Have they been screened for bacteria? Might their clothing or handshakes and kisses spread pathogens in all directions?

Another variable to consider is the human immune system. While it certainly makes sense to reduce the exposure of medically fragile patients to potentially harmful bacteria, the germ theory of disease does not explain every illness, and not all immune-compromised patients who are exposed to pathogens become infected.

In fact, some studies, such as “Effect of Petting a Dog on Immune System Function” by C. Charnetski, et al, in the medical journal Psychological Reports (December 2004), show that petting a dog boosts immunity. For more than 30 years, Delta Society has documented the health benefits of pet visits, and its website and published reports provide a wealth of information on this subject.

Legal liability
Until it announced its new policy, Delta Society deferred to its members’ veterinarians regarding diet, vaccinations, parasite control, and other health matters. The new policy links its decision to override the dietary recommendations of its Pet Partners’ veterinarians to the organization’s legal responsibility for the animals it insures.

But according to attorney Ray Mundy of New Hempstead, New York, who has served as president of the Hudson Valley Humane Society for more than 15 years and is well acquainted with lawsuits involving animals, the likelihood of anyone suing an organization like Delta Society for infecting someone with Salmonella, E. coli, or any other pathogen is negligible – and the likelihood of such a suit succeeding is, he says, “beyond imagination.”

While it’s true that in the United States, anyone can sue anyone about anything, contingency fees are the standard in personal injury cases. In contingency cases, attorneys who file a lawsuit aren’t paid until and unless the case is decided in the plaintiff’s favor.

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“This system filters out frivolous suits,” says Mundy, “along with cases that aren’t likely to succeed. For someone to sue a therapy dog organization for infecting a client or patient, they would have to prove that the infectious agent, whatever it was, came directly from the animal and nowhere else. Considering how ubiquitous infectious pathogens have become in our society, how many facilities allow visits from unscreened dogs belonging to friends or family members, and how many human visitors carry bacteria on their hands and clothes, that burden of proof is for all practical purposes impossible.”

This is especially so, he says, when pet handlers with special training visit with screened, healthy, clean animals, and when handlers and facility staff encourage clients to wash their hands or use a hand sanitizer after petting therapy animals.

Other strategies that help reduce infection when visiting at-risk patients include preventing therapy dogs from licking the people they visit; using barrier protection, such as placing an extra sheet on the bed and another on the patient before a visiting dog sits or lies next to the patient; working with a staff or volunteer escort who can watch for hazards and assist clients or patients with hand cleaning; and not visiting patients with open wounds or those who are in isolation for infection control.

Infection control options
According to Mary G. Enig, PhD, an expert on fats and oils, coconut oil’s medium-chain fatty acids inhibit the growth of many pathogenic microorganisms, including Staph bacteria. Coconut oil’s capryllic acid significantly reduces Salmonella and Campylobacter jejuni (another serious foodbourne pathogen) when fed to chickens and other animals. Dr. Enig cites research on two strains of S. aureus showing that monolaurin from coconut oil combined with the essential oil of oregano (itself a powerful disinfectant), worked better than the most potent antibiotic.

She writes, “This research showed that these safe antimicrobial agents could be useful for prevention and therapy of Staphylococcus aureus and numerous other infections. It is now clear and scientifically validated that the inclusion of coconut oil in the diet could and should be utilized for its preventive and healing properties.”

The recommended amount for dogs is 1 teaspoon per 10 pounds of body weight per day. Start with small amounts and increase gradually. (See “Crazy about Coconut Oil,” WDJ October 2005, for more information about coconut oil’s benefits to dogs.)

Oregano essential oil can be given to dogs by placing drops in an empty two-part gel cap (available at health food stores), closing the cap, and placing it in a small amount of food so that the dog swallows it whole. Dogs do not like the taste! When buying, be sure the label says Origanum vulgaris, preferably wildcrafted or organic. Use 1 drop of oregano oil per 50 pounds body weight once or twice per day. For small dogs, dilute 1 drop essential oil in ½ teaspoon vegetable oil and give ⅛ teaspoon per 10 to 15 pounds of the dog’s body weight.

Clorox bleach effectively kills Salmonella, E. coli, MRSA, and other harmful bacteria. Meat, poultry, fish, and eggs can be disinfected by soaking them in a solution of 1 teaspoon regular unscented Clorox in 1 gallon of water. Soak eggs for 20 to 30 minutes; soak meat, poultry, or fish for 10 minutes per pound if fresh and 15 to 20 minutes per pound if frozen. Immediately place food in a fresh water rinse for 10 minutes.

To disinfect counters and work surfaces, add 1 tablespoon Clorox to a gallon of water. Spray or wipe and let air dry. To disinfect sponges and dish cloths, prewash, then soak in ¾ cup Clorox diluted in 1 gallon water for 5 minutes; rinse, and dry.

Alternatively, portable steam cleaners have become popular becuse they’re easy to use and effective sanitizers of kitchen counters, sinks, floors, pet bedding, and other surfaces.

Your microwave is a powerful germ killer, too. A study published in 2007 in the Journal of Environmental Health showed that zapping wet sponges, plastic scrubbing pads, and dishcloths in the microwave for two minutes at full power killed or inactivated more than 99 percent of the living germs and bacterial spores that contaminated them, including E. coli.

One of the easiest ways to help keep dogs clean is with microfiber cleaning cloths. These rough-textured polyester-polyamide cloths were originally developed for “clean room” applications in the semi-conductor industry. Used wet or dry, they attract and trap dust, dander, loose hair, and other particles. Microfiber fabric does not disinfect, but it picks up and removes bacteria. Dogs can be wiped with clean microfiber cloths during therapy visits to minimize the transfer of potentially harmful bacteria from hands that pet them. The cloths can be microwaved or washed in hot water with bleach and dried in a hot dryer. Don’t use fabric softeners or dryer sheets, which reduce the cloths’ effectiveness.

In addition, several brands of disinfecting pet wipes or sprays can be applied to a dog’s coat or paws.

The future of pet visits
Delta Society’s abrupt announcement of its new policy has sent shock waves through both raw-feeding and pet-therapy communities. Many advocates of raw feeding as well as concerned Delta Pet Partners have sent letters and emails asking the organization to reconsider.

The American Humane Association’s (AHA) Animal-Assisted Therapy program, headquartered in Englewood, Colorado, is one of the largest Delta affiliates in the nation. AHA President and CEO George C. Casey and Senior Vice-president of Human-Animal Interactions Marie McCabe, DVM, wrote in a June 2 letter to Delta Society, “We invite Delta Society to share additional details [that led to the new policy] and consider an inclusive process of both reviewing the science behind the decision and revisiting the decision itself. The new policy has a tremendous impact, not only on Delta Society volunteers, but on all the clients they serve. Additional background and facts regarding the basis for this sudden and drastic decision would allow our staff and volunteers to evaluate it for themselves. Without such information, we are concerned that many members, and even affiliates, may elect to withdraw from the Delta Society Pet Partners program.” The AHA’s questions to Delta Society include:

■ What prompted this decision and short compliance deadline which provides virtually no opportunity to phase in changes in therapy-animal diets?

■ Has there been a recent incident involving one or more persons contracting Salmonella or E. coli from a therapy animal on a raw protein diet?
 
■ Have the Centers for Disease Control and the Joint Commission (an accrediting agency of health-care organizations) been consulted and, if so, do they concur with Delta Society’s position?

■ Has Delta Society determined the number of therapy animals and clients potentially be impacted by the decision?

Delta Society has invited members to submit questions about the new policy to its Medical Advisory Group, which will answer them through a FAQ page at the Delta website. We submitted the following questions:

■ How does Delta Society plan to enforce its new policy?

■ Can dogs continue as Pet Partners if they eat raw cheese sold for human consumption (a protein food) as a snack, training treat, or as part of their dinner?

■ Does the restriction apply to freeze-dried raw treats or foods, such as Wysong’s, or a dehydrated raw diet, such as Honest Kitchen?

■ Are dogs who are fed a commercial diet but occasionally eat cat droppings, manure, or dead animals prevented from making visits as part of this new policy?

■ What about commercially fed dogs with coprophagia?

■ What about commercially fed dogs who live in messy houses? Or with reptiles? Or with people who are themselves spreading Salmonella or other infections?

As this article goes to press, no members’ questions or answers have been posted at the Delta website, nor has the organization announced any change or review of the new policy.

Considering the many documented social and health benefits of pet visits – animals have a calming effect on people; petting a dog lowers blood pressure and calms heart rates; pet visits boost morale and provide important social stimulation and interesting activities; pet visits encourage cooperation among clients or patients as well as cooperation with health care practitioners; and contact with pets can significantly improve quality of life – it’s no wonder therapy dogs are popular.
Some Delta-affiliated groups with raw-feeding members plan to continue as independent organizations with their own liability insurance. Others may turn to regional organizations or to Therapy Dogs Incorporated, Therapy Dogs International, the Foundation for Pet Provided Therapy (Love on a Leash), or Paws for Friendship, Inc., all of which are national/international therapy dog registries and none of which ban the participation of animals fed raw protein.

As researchers Sarah Brodie, Francis Biley, and Michael Shewring concluded in their 2002 report “Exploration of the potential risks associated with using pet therapy in healthcare settings” in the Journal of Clinical Nursing, “A search of the literature has assessed potential and actual risk and concludes that the hazards are minimal. The potential to suffer harm does exist but it can be minimized by taking simple measures, including careful selection of animal and client, thorough planning and allocation of responsibility, rigorous health care of the animal, and informed practices by all involved.”
 
CJ Puotinen was, until June 30, a Delta Society Pet Partners training instructor, and, with her Labrador Retriever, a Delta Pet Partner. She is also a prolific author of books on holistic health.

Using Your Dog’s Bowl As a Training Tool

By
Pat Miller, CBCC-KA, CPDT-KA
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You may think feeding your dog is a simple matter of dumping food in his bowl and plopping it down on the floor in front of him. You may be wrong. Mealtime is fraught with significance for your dog, and loaded with opportunities for you to influence his health and his behavior. Failure to take advantage of these could actually contribute to the development and/or escalation of problems that might otherwise be averted. A few deliberate decisions and choices on your part can go far in creating harmony in your home.

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What to feed
Many pages in each issue of WDJ are devoted to articles about what to feed your dog, so I won’t go into detail here. Suffice it to say that there is no substitute for a top quality diet for your dog, for both good health and good behavior.

When to feed
When people ask me when I feed my dogs, I tell them I feed twice a day on a regular schedule. My dogs are fed regularly in the morning between 6:30 and 10:00 am, and regularly in the evening between 4:00 and 8:00 pm. Puppies, of course, need to be fed more often, and all my feeding suggestions go out the window if your dog needs a particular diet or feeding schedule due to health reasons.

I am adamantly opposed to “free-feeding,” where food is left down for the dog all the time. You lose a lot of information about your dog’s eating habits and health if you just refill the bowl every time you notice it’s dropped a few inches, and you miss great training and relationship opportunities if your dog has free access to food.

When I feed my dogs, they eagerly lick their bowls clean within minutes. If one of my dogs doesn’t clean her plate, I’m on alert for possible health problems. If she misses two meals, it’s time to talk to the vet. If your dog has food available all the time, you probably wouldn’t notice as quickly, and he might be much sicker by the time you see your veterinarian.

Then there’s the leadership thing. One definition of “leader” in a social group is the one who can control the good stuff. Controlling your dog’s food – when and where he gets it – is just one more way of gently reminding him that you’re in charge. When you put your dog’s bowl down on the floor, full of his tasty dinner, you’re saying, “This is my food, furry friend, and out of the goodness of my generous heart,  I’m willing to share it with you.”

While you’re at it, this is an ideal time to implement your “Say please” program, where your dog earns all good things by offering a deference/good manners behavior such as “sit.” If you teach your dog to offer a sit, and wait after you place his bowl on the ground until you release him to eat, you multiply the leadership value of controlling your dog’s access to food.

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Weight control is another good reason for feeding meals instead of having an open food-bar. Lucy’s putting on a few pounds? Time to cut back a few of the California Natural kibbles in her bowl. Scooter’s looking a little thin? Let’s add an extra half-scoop of Merrick’s canned food to his. If you free-feed multiple dogs, you may end up with one on the too prosperous side, while another looks too lean. There could be some subtle resource-guarding going on.

Resource-guarding is yet another reason not to free-feed. It may be subtle, where one dog quietly intimidates another away from the food, or it may be quite blatant, with one dog guarding all the food that’s available from his canine packmates as well as his human family members. Guarding can expand from the bowl and surrounding area to the entire room, and even the doorway and the hall outside.

Your training program is another very important reason to feed meals. Since most positive trainers use food as a reinforcer much of the time, it’s helpful to know when your dog’s stomach is emptier; that’s when he’ll be more reinforced by food. When I have a client who tells me her dog isn’t very food-motivated, I often discover that the dog is being free-fed. You can schedule your training sessions according to your dog’s mealtimes or vice versa. If training class is tonight, hold off on dinner until after class, and then gauge how much dinner he gets based on how many treats he got during class. As long as you use high-quality treats, he won’t be deprived of nutrition by this exchange. If he loves his food, you can even use part of his meal as training treats when you practice his lessons at home during the week.

Some trainers, in fact, recommend hand-feeding all your dog’s meals, at least at first, to take advantage of the relationship-building opportunity of delivering all of your dog’s food directly to him. This has its benefits, especially with undersocialized dogs who need to learn to trust their humans, and those with poor impulse control for whom food delivery can be used as training sessions.

Finally, a dog’s digestive system is designed to eat meals, not graze like a horse. In the wild, canids make a kill, gorge, and go away until it’s time for the next hunt. They don’t need a bowl of kibble, like peanuts on your coffee table, to snack on all day.

Where to feed
Feeding location depends on your dog, and your family’s routine. If your dog guards his bowl, feed him in an out-of-the-way location where you can close the door and let him eat in peace. If you have multiple dogs, feed them in locations that don’t elicit resource-guarding or meal-stealing. We feed three of ours in opposite corners of the kitchen, one in the dining room, and the little Pomeranian in the laundry room with the door closed – both to protect him from intrusion by the big dogs, and because he guards resources. We always stay in the area to referee the big dogs if necessary (it rarely is).

You might choose to feed your dogs in their crates; this keeps everyone contained and minimizes the need for you to referee. It can also exacerbate resource-guarding, so it may not be a good choice for a dog who already aggressively protects his resources. If you have just one dog (or you can separate your dogs), load the food into interactive toys such as Kongs, so he (or they) have to work for their meals.

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Another environmental enrichment feeding plan is to scatter your dog’s food in the yard, so he has to go “hunt” for it. This is not free-feeding; you still just give him one meal’s worth. And it doesn’t work for multiple dogs unless you have separate yards in which to feed them.

How to feed
If you have a single dog, “how to feed” is fairly simple. I already mentioned the value of using “Say please” by having your dog sit and wait while you set his bowl down. You can take that even further, on the days you have a little spare time, by making each meal a training session: set the bowl on the counter and practice several different behaviors before putting the bowl on the floor.

If you live in a multi-dog household, feeding gets more complicated. Who eats first? How do you manage one dog (or more) while you’re putting food down for another?

With five dogs in our family, feeding time is a classical exercise in management. I’m the primary feeder, with Paul doing back-up when I’m not there. I fix all the bowls, placing them on the counter, adding supplements and medications as needed. (Our dogs all get their pills, when they need them, in cheese, on top of their food.) The dogs are gathered around my feet in eager anticipation. When all the bowls are ready, I escort Scooter to the laundry room, popping a cheese-cube in his mouth as we go to forestall his barking. Lucy always wants to follow us; I cue her to “Wait” at the laundry room door, and she gets a bit of cheese when I return – her reward for complying.

Laundry door safely closed, I return to the counter and select Lucy and Missy’s bowls. Lucy (the Corgi) also tends to be vocal, and I feed her next, after a “Sit, wait!” to avoid her editorial comments about the feeding schedule.

Missy (the Aussie) has a tendency to push her way into Lucy’s bowl, so I divert her attention with her bowl in my left hand while I set Lucy’s down on my right. Then a short walk to the dining room to Missy’s spot, by the front door. Missy does three spins as we walk to her rug, then sits and waits until she gets the “Okay!” to eat.

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Back to the kitchen, where I pick up Bonnie and Dubhy’s bowls. Bonnie (the Scorgidoodle) gets hers by the water bowl on one side of the kitchen (opposite end from Lucy), and Dubhy (the Scottie) gets his in the opposite corner.

By the time Dubhy’s bowl is down, Lucy and Missy have finished and swapped bowls to see if the other has left any crumbs behind. They both respect Bonnie and Dubhy, leaving them alone until they have finished. Then all four play round-robin lick-the-bowl. When the excitement is done I let Scooter out of the laundry room to rejoin the group, and Lucy rushes out to check his bowl.

The order in which I feed is based on my convenience and preference, and has nothing to do with hierarchy. I’m in charge, so I get to decide who eats in what order. Notice that Scooter, who is easily the lowest-ranking member of our canine totem pole, gets to eat first, just because that works best. I want him out of the way of big dog feet before everyone starts dancing around in anticipation of the food’s arrival.

Who feeds?
Lots of families choose the dog’s meal as an opportunity to teach the kids to be responsible. That’s all well and good, providing an adult is supervising to be sure the dog is fed the proper amount, and to be sure the dog actually gets fed. It’s not fair to make the dog go hungry while you try to teach your child a lesson.

In truth, any family member can feed the dog, as long as there’s consistency and reliability. If there’s a family member who genuinely wants to work to improve his relationship with the dog, feeding is a great way to do that. If multiple family members feed at various times, it’s a good idea to have written feeding instructions that detail amount and procedure, so everyone gets it right. And it’s a good idea to have feeding utensils that promote consistent amounts. If your dog gets a half-cup of kibble, keep a half-cup measuring cup in your feed container, so it’s easy to scoop once and get the right amount.

I suggest this technique to keep the dog’s meal size consistent: measure out the correct amount of food, pour it into a paper or plastic cup, and cut the cup with a pair of scissors to the height of the food. Then have the family use that cup as the food scoop.

What to feed in
Last but not least, have you looked at your dog’s bowl lately? Is it clean? Or is it chipped, cracked, scratched, and worn with grungy old food stuck to the edges? Dirty and damaged bowls harbor bacteria that can cause health problems for your dog. I know, they drink out of dirty puddles, eat cat poop, and munch on dead animal carcasses, but still, you can minimize their exposure in your home by keeping their food bowls sanitary.

We’re strongly against using plastic bowls for dog food (and water). Plastic scratches easily – and those scratches trap and hold bacteria. Chemicals in some types of plastic can leach into your dog’s food (or water). Stainless steel is the best choice for dog bowls – and keep them clean!

Maybe you never realized how valuable your dog’s food bowl can be. Now you know. The good news is, it’s never too late to start taking advantage of all the benefits of thoughtful feeding. You can begin today to utilize mealtimes to their full potential. I’d love to see the look on your dog’s face when he realizes he has to sit and wait to get you to give him his bowl!

Pat Miller, CPDT-KA, is WDJ’s Training Editor. Miller lives in Fairplay, Maryland, site of her Peaceable Paws training center.

Canine Sports: Tracking

By
Terry Long
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0

[Updated November 15, 2017]

SNAPSHOT OF THE SPORT: TRACKING

What is this sport? In tracking, the dog follows a scent trail to find an article (such as a glove or wallet).

Prior training required? Minimal.

Physical demands? On the dog: Moderate. On the handler: Moderate.

Best-suited structure? Dogs of all sizes and shapes can participate, although small dogs might struggle in rough terrain.

Best-suited temperament? Dogs who are independent and enjoy making decisions are ideally suited, but many dogs love this sport.

Cost? Moderate.

Training complexity? Moderate.

Mental stimulation? High.

Physical stimulation? Moderate.

Recreational opportunities? Low.

Competition opportunities and venues? Low.

The day is very young. The sun is not yet up to help warm the bones or dry the dew-laden grass. With one exception, there is not a soul to be seen. That lone exception, bundled in layers of warm clothing, climbs out of her truck, scans the area, and smiles. There is no one in sight in this usually heavily populated urban park.

These are perfect conditions for laying a track. The scent she will leave in her wake as she walks through the wet grass will last longer in these early morning damp conditions than it would in the latter part of a warm day. And the last thing she wants after working hard to lay a good track is a carload of people arriving and unwittingly trampling the area.

Canine Sport of Tracking

As Vicki Chaney of Garden Grove, California, unloads tracking flags, harnesses, longlines, and training bags, her Golden Retrievers, Polly and Ivy, whine and thump their tails against their crates, a joyous duet of canine anticipation.

“Being wet, cold, and muddy is not my favorite, but it is necessary to teach your dog how to work under these conditions. You have to go out tracking in the rain and wind as the dog needs to learn to track in poor weather; tests are in the winter and you’re likely to be dealing with these conditions. When I first started training for this sport, I had no idea it would change my sleeping patterns and create so much dirty laundry!”

History of Competitive Tracking

The sport of American Kennel Club (AKC) tracking started out as a stepchild to its competition obedience Utility Dog (UD) title. Although you needed to pass a separate tracking test to earn your UD title between 1936 and 1946, tracking garnered a one-paragraph description in the rules and regulations of the time.

Fans of tracking pushed for changes in the rules as a result of increased understanding of scent work and, in 1947, tracking became a separate class. The Tracking Dog (TD) title was the only tracking title available until 1980 when the Tracking Dog Excellent (TDX) title was added. Responding to the challenges of finding large amounts of land in urban areas, the Variable Surface Tracking (VST) title was added in 1995. The AKC tracking rulebook now comprises 45 pages.

Tracking titles can be obtained through several organizations, including the Australian Shepherd Club of America (ASCA) and the American Mixed Breed Obedience Registration (AMBOR), but most follow the AKC test rules (the titles listed here are AKC titles). Note that although the AKC now allows mixed-breed dogs to participate in obedience, rally, and agility, they are still not allowed in tracking. ASCA and AMBOR both have provisions for mixed-breed tracking titles.

AMBOR, for example, provides titles to people who have contacted an AKC tracking judge and made arrangements for the judge to test their mixed breed, under AKC rules, in order to attain a tracking title from AMBOR. Tracking titles, regardless of purebred status, are also available as a separate test through the United Schutzhund Clubs of America.

Dogs must be at least six months of age to enter an AKC tracking test. A dog either passes or fails a tracking test; in contrast, many other dog sports are scored, with points awarded or deducted. The dog is tested on his ability to follow a track and “indicate” that he has found the article along the track. The article is usually a glove or wallet. Advanced test levels involve longer tracks, tracks that have “aged” longer, and those that have more difficult terrain and include turns in direction.
The following are brief descriptions of the AKC tracking titles. A single “pass” earns a title.

  • Tracking Dog (TD). The track is 440 to 500 yards long with 3 to 5 turns and has been “aged” for 30 minutes to two hours. The dog must “indicate” the article found. Tracks are laid in open fields with uniform cover and do not include changing terrain, roads, ditches, etc.
  • Tracking Dog Excellent (TDX). The track is 800 to 1,000 yards long with 5 to 7 turns and has been aged for 3 to 5 hours. There are two sets of “cross tracks” that are diversionary only and should not be followed by the dog. The terrain is more difficult, and the dog must indicate his find of four dissimilar articles along the track.
  • Variable Surface Tracking (VST). The track is 600 to 800 yards long with 4-8 turns and has been aged for 3 to 5 hours. The articles used must include one each of leather, cloth, plastic, and metal. The terrain must be comprised of three different surfaces and include a change of direction on one without vegetation, such as concrete. This more accurately tests a dog’s ability to track in an urban environment.
  • Champion Tracker (CT). This title is awarded to dogs who have passed all three tracking tests. An annual Tracking Invitational is open only to dogs who have their CTs. According to the AKC, only 50 dogs have passed the VST, and only 44 have their CTs.

Before entering an AKC tracking test, a dog must be “certified” by an AKC tracking judge. Tracking tests require a lot of work on the part of many people (judges and tracklayers). Due to this, and to the time-intensive nature of each test, the number of entries is limited. The certification process ensures that a dog is truly ready for a real tracking test so that the entries go to people who have done the necessary preparation.

If a dog and handler pass the certification test, they get four certifications to use in a year. Each certification must be sent in with their entry. There is a random draw from those entries to determine who will get the available test spots.

Canine Sport of Tracking

Joan Telfer of Stillwater, Minnesota, has 16 TDs and 6 TDXs on her Beagles; she’s been tracking since the early 1980s and became an AKC judge in 1993. She says that getting into a tracking test is much different from entering other sport’s competitions. “When you enter a test (TD,TDX, VST), the trial secretary accepts all entries until the closing date. Then there is a random draw to see who gets in the test and the order of the alternates.”

Training Dogs for Tracking

One might think, given the amount of time our dogs spend with their noses to the ground, that not much training would be involved in this sport. Although handlers are tapping into a natural ability of their canine friends, there is more to it than meets the untrained eye. Two things become apparent when talking to those with experience training and competing.

One is the need for the handler to “know” their dog in order to assess whether the dog is working a track or getting distracted by other things in the environment. The second is that the more a handler understands about how scent works, the better able they will be to “read” their dog’s response to the track as well as how to lay a good track.

Telfer says that this sport taught her more about her dogs than the other sports she had participated in. “I was training my Lab in obedience at a local obedience school. We were training for a CDX and I had been training him for over two years. They had started a tracking class, and all of these people were coming in with their maps and looked like they were having a great time. I asked a friend of mine what it was all about and she convinced me to try it.

“I learned how to read and handle my dog in that class. I found I love having the dogs in charge and being outdoors and watching them do something they really like. I was raising Beagles at the time and had one of them in obedience as well. She hated it so I thought maybe she would like tracking. She was a natural but, unfortunately, I was not! I pulled her off a scent too many times when she was correct.

“I started another of my Beagles and he was a natural, too. Over time, I became very good at the sport and love training and competing. I have since trained 16 Beagles to track, as well as countless students’ dogs.”

Dogs differ in how they act when they are actively working a scent and how they indicate that they have found the article placed on the track. A good tracking instructor or experienced competitor can be invaluable in helping you identify your dog’s particular way of signaling that she is working a scent. If you don’t have an instructor, you will have to learn to carefully watch your dog and notice subtle differences in how she behaves when following a track.

Since part of passing the test is to indicate the article, you as the handler must make the determination that your dog has, in fact, tracked to the article. Some handlers select from a behavior their dog offers, such as looking at the article and then looking at you. Some trainers train their dog to perform a specific behavior when they have made their find. This can be a sit, down, or nudging the handler. In either case, you as the handler, “make the call” as to whether your dog has tracked and found the article. If you make the call too early, the judge could determine that your call was premature and you will not pass the test. On the other hand, you could mistakenly think your dog has gone off the track and become distracted by a diversionary scent and inadvertently call your dog off the correct track! This is why tracking handlers often say that tracking work has taught them the most about their dogs.

Vicki Chaney decided to try tracking only because all of Polly’s Coppertop Goldens littermates had tracking titles. “I didn’t want my Polly to be the slacker of the litter. It became a joke between me and the other puppy owners. I never looked at tracking as something that could be fun. I really had very little idea what I was doing, but I thought it couldn’t be that hard! I watched a video that had been recommended to me, emailed my Coppertop friends for some advice on getting started, and then went out to the local parks and got to tracking. I soon found out that it wasn’t as easy as it looked, but I wanted that title and I was not going to quit until I got it!”

Chaney ended up getting hooked on the sport. She has a TD on three of her Goldens and a TDX on two. Early on, she was surprised to discover a hidden challenge working with eight-year-old Polly, who had both an obedience champion title (OTCH) and an agility champion title (MACH). “Her years of solid training in obedience was a huge issue and, coupled with her personality of a very polite, never wanting to make a mistake dog, the issue was made greater. Polly believed it was not okay for her to lead the way.

“In tracking it is the dog who must take the lead, showing you where the track is, and feeling confident enough to make the turns. Polly would come to a turn, stop tracking, look around, and then whine. It took me a year to figure out that she was waiting for me to give her permission to make the turn. Once I figured out what was wrong, I was able to help her understand that she had to make the decision without my permission and show me the way.”

As with many dog sports, your dog’s enjoyment of the activity will depend on how motivating you make it for him. Telfer believes that you don’t have to have a Beagle or other natural scent hound to succeed in the sport. “All dogs can do well. Highly trained obedience dogs often have trouble believing it’s not a set up [for correction]. Conformation dogs or dogs who have never been in a field may have trouble with negotiating rough cover.

“But beyond that, it is all about motivation. You need a dog, a tracking harness, a 40-foot line, and treats or toys. The hardest part is getting the handlers to trust their dogs.”

Motivation is Chaney’s top priority when starting one of her dogs in tracking. She starts with very short tracks and a super high rate of reinforcement. She starts on concrete, spraying the ground with a mist of water, and then “triple lays the track.” That is, she walks three times on the track to make sure her scent is strong. Then, she peppers the track with small bits of hot dog so that the dog follows her scent for a very short distance and gets rewarded, with the head down, with the hot dog. “As the dog eats the hot dogs, their noses are buried deep in human-scented footsteps. Human scent equals great treats!”

As the dog progresses, Chaney spaces the hot dogs further apart, lengthens the distance of the track, and introduces turns. This incremental raising of criterion lays a solid foundation for long-term success.

Team Attributes in Tracking

Telfer has seen a great variety of dogs through her years as a tracking judge. When asked if there are dangers and risks in the sport, she points out that smaller dogs might have trouble with some rough terrain and those with large, protruding eyes are at risk of eye injuries from shrubs and other ground cover. “Dogs built low to the ground can have trouble negotiating the terrain and cover, as well as injury to their belly and chest areas. The AKC does allow a dog to run while wearing protective gear.”

Many different kinds of people are attracted to tracking. However, Telfer sees a trend over the years of transient interest. “There are now a lot of people who are in it for the TD title so they can earn an AKC Versatility title (three titles in three different sports). Those people disappear after they earn their TD. Agility also seems to have claimed a lot of people’s interest.” People who stick with the sport appear to have a special connection with their dogs that comes from the close working relationship that the activity engenders.

Chaney reflects: “Polly taught me how to teach her. I began to see the wonder of scent work and how amazing it is that our dogs can find and follow a track that we laid. Watching them figure out problems as they show you how the scent changes under trees, by fences and walls, on different surfaces and in different weather, it is truly fascinating.

“I think this sport teaches you more about your dog’s body language than any other and that helps you in every other sport you and your dog train and compete in. Thanks to tracking, the relationship and communication between me and my dogs has developed to a level I never dreamed of, and it has enriched everything else we do together.”

Vicki Chaney’s Word on Her Dogs’ Competitive Tracking Careers

This is a story about canine and human communication. It took place during my second attempt to put a TDX on my youngest Golden Retriever, Ivy.

I had both Polly and Ivy entered in my first attempt to get their TDXs. Polly was 11 by then, and Ivy a comparative pup at 20 months. The two dogs couldn’t be more different in style when it comes to tracking, and I really hadn’t fully grasped that yet.

Polly drew the first track and Ivy drew the fourth track of the day. Polly, not being very confident in taking the lead, likes me to verbally encourage her throughout the track. This helps her stay focused on her task since my chatter lets her know I approve of her work, and that is very important to Polly. Ivy, on the other hand, is very confident in her tracking and is comfortable taking the lead. She knows her job and I rarely talk to her as we run a track; something I had not given much thought to.

Polly ran her track beautifully, earning her TDX. When it came time to run Ivy, I was still in “Polly mode,” chattering away, and I made a series of mistakes. The most critical was when I yelled, “Yes, good girl,” as Ivy paused with her nose buried deep in the footsteps of the cross-track layer! Good dog that she is, Ivy responded to my poorly timed verbal encouragement and went off on the cross track, causing us to fail. She understood our mistake when they allowed me to pull her off the cross-track, put her back on the correct track, and finish.

At my second TDX test with Ivy two weeks later, I was focused only on her. I had learned my lesson and kept my mouth shut. As we came to the first set of cross-tracks, with her nose buried deep in the cross-track layer’s step, she spun around, looked up at me, nose still to the track, as if to say, “Are you calling this or am I?”

I stood there like a deer in the headlights and didn’t dare make a sound! Had I not wanted so badly to pass the test, I would have burst into laughter at the sight of her expression!

After making her point, she turned around and continued on. Upon reaching the second set of cross tracks, she simply paused with her back to me letting me know they were there and that my options were still open. Again, I was silent. I am trainable! Ivy then continued on down the track, earning her TDX. What a good girl — both of us!

– Vicki Chaney

Tracking Equipment and Expenses

The cost of training classes, when you can find them, varies depending upon where you live. Telfer finds that 4- to 6-week classes run $50 and up. Entry fees can run $50 to $100 due to the expenses of putting on a tracking test. Telfer’s experience is that a TD test runs $50 to $60, while a TDX or VST can easily top $100.

Equipment costs are minimal, but travel and lodging can add up if you need to travel to test sites.

Do you have a dog who is not ready to compete in other sports due to the physical demands of those activities? Do you have a dog who is retiring from other sports? Do you have a dog who loves to use his nose? Then get tracking!

Terry Long, CPDT-KA, is a writer, agility instructor, and behavior counselor in Long Beach, CA. She lives with four dogs and a cat and is addicted to agility and animal behavior.

Canine Sports: Competitive Obedience

By
Terry Long
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0

[Updated March 23, 2018]

CANINE COMPETITIVE OBEDIENCE OVERVIEW

What is this sport? The handler directs the dog through a series of highly stylized behaviors that demonstrate control, accuracy, and precision from both handler and dog.

Prior training required? Minimal.

Physical demands? On the dog: Low to moderate. On the handler: Low.

Best-suited body structure? With some exceptions, this is a low-impact sport that does not favor a particular body structure.

Best-suited temperament? Dogs who do best like to train and can tolerate a lot of repetition.

Cost? Moderate to high.

Training complexity? Moderate.

Mental stimulation? High.

Physical stimulation? Moderate.

Recreational opportunities? Low.

Competition opportunities and venues? Moderate.

You could hear a pin drop. The bleachers and chairs are jammed with an audience holding its collective breath as the handler-dog team on the floor completes their final exercise in the American Kennel Club’s (AKC) National Obedience Invitational, an annual event that tests the best in the sport. The team that wins this final round has competed for several days in multiple classes, demonstrating the mental and physical stamina, as well as the training “chops,” that gave them a shot at this premier event. Precision heeling, directed retrieving, scent discrimination, directed jumping, and hand signals from a distance are the hallmarks of this level of competition. Points are taken off for the slightest of mistakes.

The crowd erupts – whistling, clapping, and shouting its approval of this team’s performance: Petra Ford and Tyler, her black Labrador, have just delivered a performance that takes first place for the second year in a row and leaves members of the audience shaking their heads in disbelief. That was not only good, it was awesome. The crowd, most of them obedience competitors themselves, knows what that kind of performance takes in terms of dedication to this sport.

History of Competitive Obedience

The first obedience test was created by Helen Whitehouse Walker in Mt. Kisco, New York, in 1933. By 1936, the AKC had adopted standards and 18 trials were held across the United States. Additional organizations have been established since then to award titles to teams that compete in the sport.

Competitive Dog Obedience

The AKC’s original philosophy was to create a series of exercises that would “demonstrate the usefulness of a dog as a companion to humankind.” The Australian Shepherd Club of America states it this way: “The purpose of Obedience Trials is to demonstrate the usefulness of the dog as a companion of man, not merely the dog’s ability to follow specified routines in the obedience ring. The basic objective of Obedience Trials is to produce dogs that have been trained and conditioned always to behave in the home, in public places, and in the presence of other dogs.”

Competition obedience was for many years the only “dog sport” available. As a result, it developed a strong following, providing an outlet for dog people to go on to advanced training and competition outside the conformation ring.

But as other dog sports were created, the face of competition obedience has changed. Many of its competitors have been enticed by other sports – particularly those that are easier to learn and those that dogs enjoy more. Agility, in particular, has drawn such huge numbers of obedience competitors that the AKC is concerned about diminishing entries in its shows.

On its website, the AKC states, “Obedience entries have continued a steady decline over the past 10 years.” However, it’s not simply the advent of additional sports that appears to have affected the popularity of competition obedience. As we will explore in this article, the rising popularity of positive reinforcement training methods, especially clicker training, has deterred some handlers from participating in a sport that has a history of compulsion-based training.

Competition Categories

The AKC’s five levels of competition are generally accepted as the standard for the sport. Each handler/dog team starts with a perfect score of 200, and points are deducted for errors. A score of 170 or higher is required to qualify, and you need three qualifying “legs” under three different judges to earn titles.

• Novice: The Companion Dog (CD) title is the AKC’s novice title. Exercises are performed both on- and off-leash and include the following exercises: heeling on-leash in a figure 8 pattern; heeling off-leash in a pattern directed by the judge; come when called; stand for exam with the handler a short distance away; a one-minute sit-stay with the handler across the ring; and a three-minute down-stay with the handler across the ring. Both the “long sit” and the “long down” are performed in a group of other dogs.

• Open: The Companion Dog Excellent (CDX) is the AKC’s open title. All the exercises are performed off-leash and entail heeling, retrieving, and jumping. In addition to the long sit and the long down, exercises include heeling in a pattern directed by the judge and a figure 8; the “drop on recall,” in which a dog is called to the handler from a sit-stay across the ring, and then, upon direction from the judge, is cued to lie down; the “retrieve on the flat,” in which the dog is sent to a dumbbell, picks it up, and returns to and sits in front of the handler, and holds onto the dumbbell until commanded to drop it into the handler’s hands; a “retrieve over a high jump”; and performing the broad jump.

• Utility: The Utility Dog (UD) is the AKC’s utility title. All exercises are performed off-leash and focus on advanced retrieving and exercises at a distance from the handler. One of these exercises entails scent discrimination, in which the dog must identify and pick up the dumbbell with the handler’s scent from a pile of other dumbbells (which are called “articles”).

Another exercise is the “directed retrieve,” in which the dog is directed to retrieve one of three gloves. In “directed jumping,” the dog must jump over a specific obstacle. In the “signal exercise,” the dogs is cued (with hand signals only) to stand-stay in heel position when the handler stops, walks away, and turns to face the dog. Then she signals the dog to down, then sit, come, and return (“finish”) to heel position. In the “moving stand and examination,” while heeling, the dog is cued to stop, stand, and stay while the handler moves away and the judge performs a brief physical examination, after which the dog is cued to return to heel position.

• Utility Excellent: The Utility Dog Excellent (UDX) title requires a combination of qualifying legs in both Open B and Utility B on the same day. (A dog is considered to be in “B” after completing the UD title.) Ten such double qualifying scores are required to earn the UDX.

• Obedience Trial Championship: The coveted OTCH is the pinnacle of AKC competition obedience. It requires the team to earn 100 points by placing first through fourth places. Point values are based on a formula of placements and the number of dogs competing that day in Open B and Utility B classes. Teams can accumulate OTCH points while simultaneously working toward their UDX title.

The top OTCH dogs vie for an invitation to the AKC’s National Obedience Invitational, which invites the teams with the most OTCH points within a particular breed. The winner in each breed earns the National Obedience Champion (NOC) designation.The AKC has recently added other titling events to the sport, effective in April 2010. See the websites listed to the right.

Training

There are at least two subcultures within this sport. One is comprised of people who train hard and title with qualifying scores between 170 and the low 190s. Another is made up of a smaller group of people whose lives revolve around training and competing for scores in the rarified air of the upper 190s. Remember, a perfect score is 200. Slightly out of position on the heel? That’s 2 points off. A crooked “front”? That’s another 2 points deducted. One more of those and you’re no longer in the running for the coveted score of 195 or above. Going for an OTCH, the creme de la creme of AKC obedience? Esther Zimmerman of Hopkinton, Massachusetts, has been competing since 1976 and has earned CH/UDs on two Schipperkes and a CH/UDX and OTCH points on another one.

Competitive Dog Obedience

COPYRIGHT © 2010

“When the AKC conceived the OTCH, its intention was for there to be approximately 100 new OTCHs earned each year. And that has been the case, with the fewest being 79, and the most being about 115 since the mid 1970s.

“That’s a tiny percentage of all the people who compete in the sport. Those people have to be excellent trainers, regardless of the techniques they use. They have to have dogs that are healthy enough to train and compete for years, which is luck of the draw to some degree. They have to have time to train many hours every week. They have to have a lot of money to spend on training, entries, hotel expenses, gasoline, etc. They have to defeat other dogs to get placements and earn points. It is an amazing achievement to earn an OTCH.”

So why do people keep coming back for more if it’s so difficult and the opportunity cost is so high? Deborah Jones, PhD, co-author of In Focus and owner/moderator of the ClickCompObed Yahoo discussion list, which promotes the use of clicker training in the sport, tries to explain the allure of a sport that requires such precision.

“I remember the first time I saw competition obedience in about 1992. I immediately thought ‘I can do that!’ I had no idea how complex and precise the exercises actually were. I’ve been training toward that elusive perfect performance ever since. Sometimes some of the exercises are nearly perfect and every once in a while, one or two are totally perfect. But to get it all to come together at the right moment is like chasing a moving target. Each exercise and each dog offer totally unexpected and unique challenges.”

For those like Jones, competition obedience presents challenges that no other sport does. In addition to the difficulty of teaching a dog to heel in an exact location, without lagging or forging, which can takes months, you must train your dog to do many exercises that require you to be as precise as you expect your dog to be. Footwork is a notorious challenge for many novice handlers. A foot out of place can send your dog wide around your body in an “about-turn,” costing you precious points off your score. Many people find obedience training as a result of a search for basic training for their out-of-control or rambunctious adolescent dogs.

Jones, a psychology professor at Kent State University, rescued Katie, an 18-month-old black Labrador in 1992. Katie had been in three different homes and had been living in the woods for six months before Jones adopted her. Katie was a handful. Jones was in graduate school at the time and was told by several people that she didn’t have time to devote to a dog.

“It turned out to be the best decision I ever made. I took Katie to a training class and was introduced to the world of dog performance events. At that time obedience was the ‘only game in town’ if you wanted to train and compete so I became involved with a local AKC club. I was drawn to obedience because I enjoy training challenges and wanted to see if I could achieve the same results that others did. At that time I didn’t realize how forceful and coercive some of the training methods were. Once I did, I wanted to find a better way to train for competition.”

That is the challenge of this sport. Although many trainers start puppy training with mostly positives, many later resort to severe collar corrections, ear pinches (to cause sufficient pain for the dog to open its mouth into which a dumbbell is forced), hitting and slapping (e.g., under the chin to correct the dog for mouthing or dropping the dumbbell and on the head or nose for breaking a stay).

Much of this is done in the belief that there is no other way; after all, dogs are getting titles with trainers using these techniques. This is compounded by the fact that, unless you are an astute observer of canine body language, you might miss the stress signs that dogs in the ring are showing (yawning, lip licking, averting eyes from handlers, increased respiration, avoidance of handlers and their hands, flinching, and either slowing down or frenetic speeding up).

Additionally, old-time trainers who have been in the sport for many, many years point to the lack of advanced obedience titles in the ranks of positive reinforcement trainers as justification for their training methods.

Zimmerman, with Siesta Schipperkes, sees a progressive shift in the sport. “There have not been enough people doing clicker training for competition obedience long enough for the question to be fairly asked [about whether there are clicker-trained OTCHs]. Given enough time, there will be more! I have been competing since 1976 and have had the great good fortune to have two Schipperkes earn their UDs, and one who earned his UDX and 12 OTCH points. They were entirely trained with positive methods – not exclusively clicker training, but as positive as we could make it.”

If you have been tempted to try competition obedience, but have been turned off by some of the training methods you see being used, don’t give up. Better yet, jump in with both feet. It may take a bit of research to find other positive reinforcement obedience handlers and instructors, but it can be worth the effort. More and more top teams are using positives and seeing the difference in attitude with their dogs.

Jones, who has been clicker training for 18 years, teaches competition classes and workshops and is now competing with Zen, her two-year-old, red-and-white Border Collie, preparing him to go on from earning his CD and CDX to Utility. It was Copper, her Papillon, however, who reaffirmed her commitment to using positives in training for the sport.

She says, “Earning Copper’s agility MACH (AKC’s Master Agility Championship) and two weeks later earning his UD were two of my proudest achievements as Copper is a very soft and sensitive dog. He was trained for both agility and obedience without a single correction or aversive.

“People keep saying you can’t get precision and accuracy with a dog unless you use ‘corrections.’ I strongly disagree. It doesn’t make any sense from a learning theory perspective. Behaviors taught using punishment aren’t any stronger than those taught using reinforcement; just the opposite. Punishment-based training is riddled with pitfalls, even if you do it ‘right.’ The worst thing that can happen with errors in reinforcement-based training is that your dog gets a few extra cookies.

“The newest buzzword is ‘balanced’ training, in which trainers use both reinforcement and punishment in their methods. Be very, very careful about accepting this as a reasonable compromise. A few cookies do not cancel out the use of force.”

Now that you know it can be done positively, what are your biggest training challenges? According to Jones, heeling is most people’s nemesis. It requires the handler to train themselves to walk a very straight line (not as easy as it sounds), and to be able to break heeling down into very tiny components for the dog to be successful. Another difficult exercise is the “go-out” in Utility. Jones notes, “Getting a dog to run straight to nowhere can be quite challenging. Asking him to do it over and over again in the ring seems to be problematic. That exercise requires lots of upkeep. In Open, the out-of-sight stays seem to cause the most problems for people and their dogs. Everyone is anxious about them!”

Jones recommends starting with basic manners and tricks before starting serious obedience training. Tricks, especially, help you hone your observation and timing skills, both of which will be invaluable when you start training obedience exercises. Many clicker trainers will also tell you that working together to solve a training game builds strong teamwork between the two species. A relationship built on mutual fun and “playing” together will benefit you when you begin teaching more complex obedience behaviors.

Competitive Obedience Team Attributes

People who are attracted to this sport must enjoy training because it takes a lot of it to be successful. Even with the most talented and workaholic dogs, it still takes a lot of work to train to advanced levels and to keep it fun for dog and handler. Jones is typical of many people who keep returning to the sport.

“I love the challenge of making obedience fun and exciting for my dogs,” she says. “I want them to think of it as one big game. I see many, many unhappy dogs in obedience competition. With every dog I own I get a little better as a trainer and we get a little closer to perfection. I love the challenge of taking exercises that people insist must be taught with aversives and force, and finding a positive way to get results. I also like the opportunity to test my training on a fairly objective scale [by competing].”

Jones notes other human attributes: “Some people in this sport are extremely controlling and a bit on the Type A side – intense and competitive. Others enjoy just having fun with their dogs and spending social time at trials with friends.”

Equipment and Expenses

Expenses fall into three categories:

• Training equipment: Costs will vary widely, but plan on buying things such as scent discrimination articles (a set of metal ones and a set of leather ones), retrieving dumbbells, ring gating, jumps, and a variety of training props (many made from simple PVC pipes).

• Classes and workshops: The cost of weekly classes runs $75 to $150 for a 6- to 8-week course. Private lessons range from $40 to $125 an hour, while a one-day workshop costs between $75 and $225. Practice matches cost $5 per “run through” when you can find them.

• Trial and travel expenses: Travel will be dictated by how far you must travel to find a trial, which varies widely across the country. Competition entry fees cost about $25 to $30 per class. In novice and open, you will typically have only one class in a day. After you have earned your UD, you will need to budget for both the Open B and Utility B classes.

Get Started

If you have not explored clicker training, it would be well worth your time to try it. Knowing that you don’t need to be an adversary in your training can make this sport very appealing. Jones, who says it can be lonely being the only positive trainer at an event, says how you train says a lot about who you are:

“Clicker training is part of who I am as a trainer. It goes so far beyond using a clicker . . . it goes against my nature to use force or aversive in training my dog. I feel very strongly that we should both enjoy this process or we shouldn’t be doing it!” So grab that clicker, start training, and be part of the next generation of positive competition obedience trainers.

Terry Long, CPDT, is a writer, agility instructor, and behavior counselor in Long Beach, CA. She lives with four dogs and a cat and is addicted to agility and animal behavior. See page 24 for contact info.

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How To Stop the Dog from Chasing Children

By
Pat Miller, CBCC-KA, CPDT-KA
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[Updated January 28, 2019]

Dogs and kids can be the best of playmates. Sometimes they develop this relationship all on their own, and sometimes they need some outside assistance to become fast friends. It’s not uncommon for the basic dog-kid foundation to be solid, with just a few rough edges that need smoothing. One of the common rough spots is when your excited dog wants to chase after and nip your excited children. Here are five things you can do if your canine youngster wants to play a little too roughly with your human youngsters:

Dog Chasing Children

1. Supervise your dog diligently.

Dog trainers say it all the time: Never leave small children alone with even the most trustworthy dog. If you’re present when play starts to escalate out of control, step in and calm things down. Without your intervention, your dog gets reinforced for her inappropriate behavior. Chasing a squealing child is a very fun game! – at least for the dog, and sometimes for the child – until a bite happens. Behaviors that are reinforced are more likely to be repeated and to increase in intensity, and are harder to modify or extinguish.

2. Make Household Rules

Of course children need to be able to run around without worrying about a canine ambush. Set some firm house rules that are designed to minimize chase-and-nip games. If your dog loves kids, it’s fine to allow your small children and their friends to hang out with the dog (under direct supervision, of course); your older children and their friends can hang out with the dog with less supervision. In either case, one house rule should be that before rowdy play happens, the dog gets escorted to a safe place away from the action, and gets something wonderful (i.e., stuffed Kong) so she doesn’t feel punished. Another house rule is “absolutely no deliberately antagonizing the dog to encourage her to chase or nip.” Violation of these rules should result in loss of dog-companionship privileges for a pre-determined period.

3. Train Your Dog to Stay Off Kids

The better-trained your dog is, the easier it is for you to calmly and quickly intervene. A gentle “come” or “down” cue for a dog who is under good stimulus control is all it takes to abort the chase-and-nip game. Deliver high-value reinforcement when your wonderful dog responds immediately to your cue to keep those responses strong. Behaviors that are reinforced are more likely to repeated and repeated with enthusiasm.

4. Involve Your Children in the Training Program

The best way to train your children to interact appropriately with your dog is to include them in your dog’s training program. You can teach even very young children how to elicit a polite sit from your dog by raising their hands to their chest – if you’ve taught your dog this body-language signal to sit. Teach your young humans how to play “trade” with your dog by offering a treat or a toy to get her to give up something she has in her mouth, then encourage them to play games that direct her energy – and her teeth – toward something other than a child’s skin or clothing, such as a ball or Frisbee. The better you are at teaching your children what to do (and reinforcing them for it!), the more they will do what you want them to. Just like dogs!

5. Read Up on Dogs and Kids

Trainer/author/mother Colleen Pelar has written two excellent books on dog-kid relationships. Her first, Living with Kids and Dogs Without Losing Your Mind, is loaded with excellent advice for parents. Her second, Kids and Dogs; A Professional’s Guide to Helping Families, is written for those dog training professionals (like me) who don’t have human children of our own. If your trainer regularly instructs you to do things regarding your dog and child that you feel are unrealistic, read this book and then hand it off to her.

Of course, not all dogs love kids. If your basic dog-kid relationship foundation is shaky, then you need to do a whole lot more than the above five things. That’s an entirely different article! If that’s the case, don’t let them interact until you consult a good, positive behavior professional.

Training Small Dog Breeds

By
Laurie C. Williams
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There’s a reality show that airs on TLC called Little People, Big World that chronicles the daily lives of the Roloffs, an Oregon family made up of both small (both parents are under 4 feet tall) and average-sized people. The series tastefully portrays how every day activities and seemingly uneventful situations can affect the family members differently based on their size and how society views them. Most importantly, it successfully shows that size does matter, particularly in a society built for the average-sized person. I just wish there was a show, or at least an effective way to get that point across regarding small dogs. They and their owners have long been misjudged and misunderstood.

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According to the 2009 American Kennel Club registration statistics, nearly half of the top 20 breeds are small dogs that weigh less than 20 pounds at full adulthood. This appeal makes a lot of sense. Small dogs are much more portable and can be taken virtually anywhere, even to places where dogs usually aren’t allowed (not that I advocate that). They require less space, making them a viable choice for apartment or condo dwellers. They’re much easier to exercise; a regular-sized room can easily be converted to a play area without moving even a single piece of furniture.

Despite all this, intolerance and a lack of understanding of smaller dogs is prevalent in society. Stereotypes deem them “snippy,” “yappy,” and “bratty” – and perhaps the most cutting of all, “not even real dogs.” I’ve heard this even from people who consider themselves dog lovers!

Small dogs and those who choose to share their lives with small dogs are different. Throughout my 25-plus years as a professional in the field of dog behavior and training, it’s been my experience that small dog owners do tend to be much more protective of their dogs (sometimes to the point of being overprotective) and are less likely to socialize their dogs or attend group training classes. They also tend to be more tolerant of – and apt to make apologies and excuses for – their dogs’ inappropriate behavior.

Before you write me off as just another one of those little dog haters, let me also say that I currently share my household with three Malteses: 9-lb. Leo, 7-lb. Andrew (with whom I appeared on the CBS show “Greatest American Dog”), and Geoffrey, who at five years of age still barely tips the scale at 3 pounds. However, I also have four big dogs, and have had large dogs for most of my life, affording me the opportunity to see both sides of the spectrum. But unfortunately, throughout all my years teaching group training and socialization classes, I’d estimate that the owners of small dogs (15 lbs and less) make up barely 10 percent of the people who come to – or even inquire about – my classes. In fact, it’s probably closer to 5 percent. That’s very sobering.

Unfortunately, it’s also understandable. Stop in and look at an average puppy kindergarten class; what you’ll usually find will be a boisterous 15-week-old Labrador Retriever puppy jumping all over his owner on one side of the room, a Shepherd-mix lunging at the Husky pup bouncing on the other side of him, and then there might be an already 40-lb. Rottweiler puppy dragging her owners through the door. All the new puppy parents are clearly having difficulty trying to maintain control of their dogs while holding onto the leash and a bag full of treats.

Is it any wonder that this environment might be uninviting for the new, nervous parent of a 4-lb. toy Poodle puppy? Subsequently, many owners of small dogs never return to that or any other training class or socialization session. As a result, too many toy breed and small dogs miss out on crucial training and positive socialization experiences at the time they need it the most, which in turn leads to the undesirable behaviors we sometimes see in small dogs that perpetuate the stereotypes.

This is why I say “bravo” to any trainer or facility that includes “Mighty Mites” or “Tiny Tots” classes, geared toward the small dog, in its programming. While these types of classes may not be as prevalent as I’d like, I do encourage small dog owners to seek them out. If no class exists in your area, go and talk to your area trainers and request one, or at least find out if they provide modifications for the smaller dog in their regular classes.

That said, failure to find a suitable group class for you and your little dog is not an excuse to fail to train your small dog! By being proactive and tweaking your training environment a little, you can successfully train your small dog at home, or even better, manipulate and modify the environment in a regular group training class to meet your dog’s specific needs.

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Level the training field
Have you ever really tried to imagine how different the environment looks to a dog who stands less than 10 or 12 inches tall? Undoubtedly everything and everyone likely looks bigger and much farther away. Just for a little perspective, try placing an alarm clock at the top of a 20 foot ladder. Then get down on all fours and look up. How far away does that clock look to you now? Is your neck feeling a little strained? Are you finding it difficult to read the numbers? All in all, it’s just not very comfortable, is it?

That’s just a small glimpse of what it might be like for a little dog to look at your face and try to decipher your expression. Getting and keeping your dog’s attention is paramount in training, and it’s difficult to accomplish that with a dog who finds it physically uncomfortable to look up at you. It’s also uncomfortable for a handler – especially if she has a bad back – to bend over (almost to the floor) again and again.

Therefore, the first thing that must be done is to give that dog a boost, helping him get closer to you – and especially your hands, which give cues and deliver treats and petting as rewards. Placing the dog on a table or chair is a good option. I love to “sofa train” my little ones with quick little training sessions while they’re sitting on the sofa with me. This makes the sofa much more than a place to cuddle; now it becomes a special place to work and have fun as well.

Another great option is to grab a yoga mat and have a seat on the floor next to your dog. Again, establishing focus and attention will be easier when both of you are closer to each other. These options are good starting points to introduce behaviors, and just like shaping any other behaviors, you can gradually bring the dogs’ focus upward until you’re eventually standing in a full, upright position.

On target
Something that should be in every small dog owner’s toolbox is a target stick. Since our arms only reach so far, and constantly bending over can literally be a pain, extending your reach by two or more feet can be a lifesaver.

Target sticks add this extension and can be used as a lure or focal point for your small dog. They can be purchased ready-made or can be fashioned from a wooden dowel with a baby spoon taped onto the end. I’ve even seen some people use a back scratcher as a target! Rubbing a high value food (like squeeze cheese, soft cream cheese, or peanut butter) onto the end of the stick will “load up” the target stick and make it an object of desire for your dog. Soon, the dog will follow that stick anywhere. Suddenly, teaching loose leash walking becomes much more manageable. You can click and reward the small dog without breaking a stride. Like any lure, the target stick can and should be faded once the dog has learned what position is the most rewarding.

With a little creativity you can find additional items that can be used as training aids for small dogs, most of which are inexpensive and readily available. You can set up a mini-agility course using those small, portable tunnels intended for toddlers, plungers for weave poles, and shoe boxes for tables or pause boxes. Dogs of any size love to run, jump, and go through tunnels, but most importantly these kinds of activities are great for relationship-building and instilling confidence.

Even little dogs have noses, so why not try some scent discrimination activities? Place treats in a mini-muffin tin and then cover the treats by placing mini tennis balls or ping pong balls on top. Encourage your dog to sniff the tin and “find” the treats by moving the tennis balls and claiming his reward. Almost anything you’d use for training a larger dog can be modified and downsized for a smaller dog if you use your imagination.

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Social work
The importance of socialization cannot be disputed. Unsocialized dogs are often fearful and socially inept; they have difficulty reading the body language signals of other dogs or performing appropriately friendly signals themselves. Those small dogs who bark and snarl and kick up a fuss when they see other dogs – especially dogs who are much bigger than they are? They are displaying fear-based aggression, but their behavior endangers themselves and their owners if they antagonize another dog into starting a fight. And dogs of any size who get scared and snap at people often end up getting permanently left at home, or surrendered to a shelter.

Here’s the bottom line: if you want your small dog to be comfortable with people and other dogs, you must socialize him or her, and as early as possible. Again, your goal is to find a group puppy class conducted by a knowledgeable instructor who knows how to provide a positive socialization experience for all puppies, regardless of size. However, if you can’t find a class like this, you need to create opportunities for yourself. There are many small dog “meet up” groups. You can find them through an Internet search, or through your favorite veterinarian, trainer, or independent pet supply store.

Before participating in one of the socialization sessions, though, attend without your dog and speak with the participants and facilitator. Surely some of them have puppies, so inquire about setting up a playgroup for the puppies only. If other small breed puppies can’t be found, don’t count out larger breed puppies. Gentle, calm, and easygoing puppies of all breeds do exist, and frankly, positive interactions with dogs who are larger than your pup are just as important (if not more so).

If your small dog is already an adult and has problems getting along with other dogs, seek out an experienced behavior professional. Counter-conditioning and desensitization exercises and other training can increase your dog’s comfort with other dogs and improve his response.

Even though your dog should be able to get along with other dogs (of any size), for his own safety, it’s best to exercise and socialize him at dog parks that have a special section for small dogs. Sadly, we’ve heard numerous reports of small dogs getting injured and even killed by larger, overstimulated, and predatory dogs in dog parks.

Smaller is good, too
I’ll be the first to admit that I do have a different kind of relationship with my little dogs than I have with my larger ones. A little dog’s size and dependency on us does promote a kind of intimacy that is hard to explain to someone who hasn’t experienced it. Remember how much you loved to coo, cuddle, and pick up your Golden or Labrador puppy when he was small? Can you blame a small dog owner for enjoying those experiences throughout her small dog’s life?

Further, if I have to maneuver through a crowd or need to get from point A to point B quickly, I’ll hoist my small dog into my arms so I can get to my destination faster. I don’t do it because I’m too lazy to get my small dogs to walk on lead politely. I do it because it’s more convenient – and because I can!

Despite my years of experience with dogs of all sizes, I consider myself fortunate to have experienced all the joys of sharing my life with my little (and well-trained and well-socialized) dogs. No matter how much you love your small dog, I’d be willing to bet that you would enjoy her even more if she were better behaved, so get busy training!

Laurie C. Williams is a dog trainer, rally obedience judge, and owner of Pup ’n Iron, Canine Fitness and Learning Center, in Fredericksburg, Virginia. See “Resources,” page 24, for contact information.

Reinforce Your Dog’s Bite Inhibition

By
Pat Miller, CBCC-KA, CPDT-KA
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Dog bite inhibition plays a key role in preventing nips and playful biting.

BITE INHIBITION: OVERVIEW

  • Take the time to teach your puppy the invaluable skill of inhibiting his bite. It could be one of the most important lessons he learns – one that will serve him well for a lifetime.
  • Supervise children with your puppy so your puppy doesn’t get reinforced for inappropriate biting, and so your children don’t have to suffer the pain of uninhibited puppy mouthing.
  • Resist the pressure from some members of the dog community to use pain and force to suppress your puppy’s biting behavior. You know there’s a better way.

My dog bites me. A lot. Scooter, the 10-pound Pomeranian we adopted from the shelter after he failed a behavior assessment (for serious resource-guarding), has bitten me more times than I can count. Most of the time I don’t even feel his teeth. He has never broken skin, and the few times I have felt any pressure, it’s been because I’ve persisted in what I was doing despite his clear request to stop. Scooter has excellent bite inhibition.

Teaching Bite Inhibition

In the dog training world, bite inhibition is defined as a dog’s ability to control the pressure of his mouth when biting, to cause little or no damage to the subject of the bite. We know that all dogs have the potential to bite, given the wrong set of circumstances. Some dogs readily bite with little apparent provocation, but even the most saintly dog, in pain, or under great stress, can be induced to bite. When a bite happens, whether frequently or rarely, bite inhibition is what makes the difference between a moment of stunned silence and a trip to the nearest emergency room for the victim (and perhaps the euthanasia room for the dog).

A bite is at the far end of a long line of behaviors a dog uses to communicate displeasure or discomfort. To stop another dog, human, or other animal from doing what he perceives to be an inappropriate or threatening behavior, the dog often starts with body tension, hard eye contact, a freeze, pulling forward of the commissure (corners of the lips). These “please stop!” behaviors may escalate to include a growl, snarl (showing teeth), offensive barking, an air-snap (not making contact), and finally, an actual bite. The dog who does any or all of these things is saying, “Please don’t make me hurt you!”

Some foolish humans punish their dogs for these important canine communications. “Bad dog, how dare you growl at my child!” Punishing your dog for these warning signals can make him suppress them; he’ll learn it’s not safe to let you know he’s not comfortable with what you’re doing -and then bites can happen without warning. (See “Understand Why Your Dog Growls,” October 2005.)

Others ignore the signals and proceed with whatever was making the dog uncomfortable. This is also foolish, because it can prompt the dog to express his feelings more strongly, with a less inhibited bite that might break skin and do damage.

The wise dog owner recognizes the dog’s early signals, and takes steps to reduce or remove the stimulus that is causing the dog to be tense, to avoid having her dog escalate to a bite. She then manages the environment to prevent the dog from constant exposure to the stressful stimulus, and modifies her dog’s behavior to help him become comfortable with it. Sometimes, however, even the best efforts of the wisest dog owners can’t prevent a bite from happening. If and when it does, one hopes and prays that the dog has good bite inhibition.

Installing Bite Inhibition

In the best of all worlds, puppies initially learn bite inhibition while still with their mom and littermates, through negative punishment: the pup’s behavior makes a good thing go away. If a pup bites too hard while nursing, the milk bar is likely to get up and leave. Pups learn to use their teeth softly, if at all, if they want the good stuff to keep coming. As pups begin to play with each other, negative punishment also plays a role in bite inhibition. If you bite your playmate too hard, he’ll likely quit the game and leave.

For these reasons, orphan and singleton pups (as well as those who are removed from their litters too early) are more likely to have a “hard bite” (lack of bite inhibition) than pups who have appropriate interactions for at least seven to eight weeks with their mother and siblings. These dogs miss out on important opportunities to learn the consequences of biting too hard; they also fail to develop “tolerance for frustration,” since they don’t have to compete with littermates for resources. They may also be quicker to anger -and to bite without bite inhibition -if their desires are thwarted. Note: Being raised with their litter doesn’t guarantee good bite inhibition; some dogs have a genetic propensity to find hard biting (and its consequences) to be reinforcing; others may have had opportunity to practice and be reinforced for biting hard.

Your dog may never bite you in anger, but if he doesn’t have good bite inhibition you’re still likely to feel a hard bite when he takes treats from your fingers -and removes skin as well as the tasty tidbit.

If you find yourself with a puppy who, for whatever reason, tends to bite down harder than he should with those needle-sharp puppy teeth, you need to start convincing him that self-restraint is a desirable quality. You can’t start this lesson too early when it comes to putting canine teeth on human skin and clothes. Ideally, you want to teach your pup not to exert pressure when mouthing by the time he’s five months old, just as his adult canine teeth are coming in, and before he develops adult-dog jaw strength. Here are the four R’s of how to do it:

1. Remove

When your puppy bites hard enough to cause you pain, say “Ouch!” in a calm voice, gently remove your body part from his mouth, and take your attention away from him for two to five seconds. You’re using negative punishment, just like the pup’s mom and littermates. If he continues to grab at you when you remove your attention, put yourself on the other side of a baby gate or exercise pen. When he is calm, re-engage with him.

2. Repeat

Puppies (and adult dogs, and humans) learn through repetition. It will take time, and many repetitions of Step #1, for your pup to learn to voluntarily control the pressure of his bite. Puppies do have a very strong need to bite and chew, so at first you’ll “ouch and remove” only if he bites down hard enough to hurt you. Softer bites are acceptable -for now. If you try to stop all puppy biting at once, both of you will become frustrated. This is a “shaping” process (see “Fun Training Techniques Using Shaping,” March 2006).

At first, look for just a small decrease in the pressure of his teeth. When he voluntarily inhibits his bite a little -enough that it’s not hurting you -start doing the “ouch and remove” procedure for slightly softer bites, until you eventually shape him not to bite at all. By the time he’s eight months old he should have learned not to put his mouth on humans at all, unless you decide to teach him to mouth gently on cue.

3. Reinforce

Your pup wants good stuff to stick around. When he discovers that biting hard makes you (good stuff) go away, he’ll decrease the pressure of his bite and eventually stop biting hard. This works especially well if you remember to reinforce him with your attention when he bites gently. It works even better if you use a reward marker when he uses appropriate mouth pressure. Given that your hands are probably full of puppy at that particular moment, use a verbal marker followed by praise to let him know he’s doing well. Say “Yes!” to mark the soft-mouth moment, followed by “Good puppy!” praise to let him know he’s wonderful.

4. Redirect

You probably are well aware that there are times when your pup is calmer and softer, and times when he’s more aroused and more likely to bite hard.

It’s always a good idea to have soft toys handy to occupy your pup’s teeth when he’s in a persistent biting mood. If you know even before he makes contact with you that he’s in the mood for high-energy, hard biting, arm yourself with a few soft toys and offer them before he tries to maul your hands. If he’s already made contact, or you’re working on repetitions of Step #1, occasionally reinforce appropriate softer bites with a favorite squeaky toy play moment.

If there are children in the home with a mouthy puppy, it’s imperative that you arm them with soft toys and have toys easily available in every room of the house, so they can protect themselves by redirecting puppy teeth rather than running away and screaming -a game that most bitey pups find highly reinforcing.

It is possible to suppress a puppy’s hard biting by punishing him when he bites too hard. That might even seem like a quicker, easier way to get him to stop sinking his canine needles into your skin. However, by doing so, you haven’t taught him bite inhibition. If and when that moment comes where he really does feel compelled to bite someone, he’s likely to revert to his previous behavior and bite hard, rather than offering the inhibited bite you could have taught him.

Teaching Bite Inhibition to An Adult Dog

Teaching an adult dog to inhibit his bite is far more challenging than teaching a puppy. A dog easily reverts to a well-practiced, long-reinforced behavior in moments of high emotion, even if he’s learned to control his mouth pressure in calmer moments.

I know this all too well. Our Cardigan Corgi, now six years old, came to us at the age of six months with a wicked hard mouth. Hand-feeding her treats was a painful experience, and I implemented a variation of the “Ouch” procedure. Because she was biting hard for the treat rather than puppy-biting my flesh, I simply said “Ouch,” closed my hand tightly around the treat, and waited for her mouth to soften, then fed her the treat. Hard mouth made the treat disappear (negative punishment); soft mouth made the treat happen (positive reinforcement). She actually got the concept pretty quickly, and within a couple of weeks could thoughtfully and gently take even high value treats without eliciting an “Ouch.”

She still can take treats gently to this day, except when she’s stressed or excited; then she reverts to her previous hard-bite behavior. When that happens, I close the treat in my fist until she remembers to soften her mouth, at which time I open my hand and feed her the treat. So, while our bite inhibition work was useful for routine training and random daily treat delivery, if Lucy ever bites in a moment of stress, arousal, fear and/or anger, I have no illusions that she’s going to remember to inhibit her bite. Of course, I do my best to make sure that moment doesn’t happen.

Because I have more leeway with Scooter and his excellent bite inhibition, it’s tempting to be a little complacent with him. I try not to. One of Scooter’s “likely to bite” moments is grooming time. The poor guy has a horrible undercoat that mats, literally, in minutes. This is a highly undesirable Pomeranian coat characteristic. I could groom my first Pomeranian, Dusty, once a week without worrying about mats. I have to groom Scooter every night.

Of course he hates it; brushing always causes him some discomfort as I work to ease the tangles out without pulling too hard on his skin. We’ve made progress in the year we’ve had him; I can comb the top half of his body without encountering much resistance, but I can feel him tense up as I approach the more sensitive lower regions. Rather than relying on his good bite inhibition to get us through, I continue to use counter-conditioning and desensitization. I feed him treats (or have my husband Paul feed him) as I groom, or let him lick my hands (an activity he enjoys mightily -and one I can tolerate in place of his biting) while I comb out the tangles.

Whether you’ve taken the time to teach your puppy good bite inhibition or had the good fortune to inherit a dog who has it, don’t take it for granted. Continue to reinforce soft-mouth behavior for the rest of his life, and don’t be tempted to push the envelope of his tolerance just because you can. Even saints have limits.

What to NEVER Do if Your Dog Bites

Over the years, I’ve cringed at a variety of puppy-mouthing modification suggestions. Here are some of the things you don’t want to do:

Alpha-Rolls

Whole Dog Journal readers might think “no alpha-rolls” goes without saying by now, but I still see clients with mouthy puppies who have had their trainers, dog walkers, dog-owning friends, or veterinarians tell them to alpha-roll their bitey pups. Don’t do it. You are likely to elicit a whole lot more biting — truly aggressive biting — as your frightened pup tries to defend himself. (See “Puppies Who Demonstrate ‘Alpha’ Behavior,” WDJ July 2006.)

High-Pitched Yelps

This might surprise you. It’s often suggested by positive trainers, some of whom I respect greatly, but I don’t recommend it. The theory is that a high-pitched yelp makes you sound like a puppy in pain and communicates to your young dog in a language he understands.

The fallacy with this theory is that we think our feeble attempt to speak “puppy” with our human yelp might really communicate the same message as a real puppy yelp – like
trying to speak a foreign language by mimicking what we think the sounds are, without actually knowing any of the words. In my experience, the high-pitched yelp is as likely to incite an excited biting puppy to a higher level of arousal (and harder biting) as it is to tell him he bit too hard and should sofien his mouth. Don’t do it. A calm “Ouch!” sends a much more consistent, useful, and universal message, which is simply, “That behavior makes the good stuff go away.”

Hold the Dog’s Mouth Closed

Another classic bad idea. What self-respecting puppy wouldn’t struggle and try to bite harder with this inappropriate restraint? All the while, you’re giving your pup a bad association with your hands near his face, which isn’t going to help with grooming, tooth-brushing, mouth exams, or even petting. Don’t do it.

Push Your Fist Down His Throat

Seriously. For the same reasons as in the prior two suggestions, this is a really bad idea.
Don’t do it.

Push His Lip Under His Canine Tooth So He Bites Himself

There really is no end to the inappropriate ways people can think up to try to change behavior. This is another one that has a strong possibility of causing your pup to associate hands near his face with pain. Don’t do it.

Bite Your Puppy Back

Yep, some folks actually recommend this. I shouldn’t have to say this, but I will anyway: Don’t do it.

Pat Miller, CBCC-KA, CPDT-KA, is Whole Dog Journal’s Training Editor. Miller lives in Fairplay, Maryland, site of her Peaceable Paws training center.

Treatment and Prevention of Kidney and Bladder Stones

By
CJ Puotinen and Mary Straus
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0

BLADDER STONES IN DOGS: OVERVIEW

1. Get an accurate diagnosis and follow nutritional guidelines for your dog’s type of uroliths.

2. If your dog is prone to urate stones, consider switching to a low-purine home-prepared diet.

3. Avoid low-protein prescription foods when they are unnecessary or ineffective at preventing stone formation.

4. For male dogs who continue to form stones, consider urethrostomy surgery to greatly reduce the risk of obstruction.

Canine kidney and bladder stones may be painful and life-threatening, but an informed caregiver can help prevent them. By far the most common uroliths or stones in dogs are struvites (see “Canine Kidney Stone and Bladder Stone Prevention“) and calcium oxalate stones (see “Preventing Bladder and Kidney Stones in Dogs“). These two types represent about 80 percent of all canine uroliths.

Now we address the remaining stones that can affect our best friends: urate, cystine, calcium phosphate, silica, xanthine, and mixed or compound uroliths.

Urate or Purine Stones

Of the remaining stone categories, urate or purine stones are the most common. They contain ammonium acid urate, sodium urate, or uric acid.

Only 6 to 8 percent of all uroliths are urate or purine stones, but their presence in certain breeds is significant. Dalmatians, English Bulldogs, Russian Black Terriers, and Large Munsterlanders develop urates because of a genetic metabolic abnormality. Miniature Schnauzers and Yorkshire Terriers do so as a result of their tendency to have portosystemic shunts, which are abnormal blood vessels that bypass the liver, predisposing dogs to urate stones. These stones can form in dogs of any age, from very young puppies to seniors, but the most common age for forming urates is 1 to 4 years.

Uric acid crystals

Of the breeds that develop urate stones, Dalmatians are most adversely affected. Between 1981 and 2000, the University of Minnesota College of Veterinary Medicine’s Minnesota Urolith Center analyzed 7,560 stones from Dalmatians. Of these, 97 percent were from males and 95 percent were composed of urates. It’s estimated that between 27 and 34 percent of male Dalmatians form urate stones, while the incidence in females is much lower.

It’s tempting to assume that any stone a Dalmatian forms is a urate, but although 97 percent of stones from male Dalmatians were urate, they also included small percentages of struvite, xanthine, calcium oxalate, cystine, calcium phosphate, silica, and mixed or compound stones. The uroliths formed by female Dalmatians were 69 percent urate and 29 percent mixed or compound, with 2 percent struvite and 0.7 percent xanthine. Correct identification is a crucial first step in treating and preventing uroliths in all breeds, including Dalmatians.

The culprits in urate stone formation are purines, a type of organic base found in the nucleotides and nucleic acids of plant and animal tissue. As dietary purines degrade, they form uric acid, which is best known in human medicine for its connection to gout, a sharply painful form of arthritis. In susceptible dogs, purines trigger the formation of urate uroliths.

Urate stones are radiolucent – that is, they cannot be identified in abdominal X‑rays – so their diagnosis is often made by the use of ultrasound, contrast dye X-rays, or analysis of urinary crystals or stones that were collected or removed.

Signs of Stones

As noted in our previous articles, an accurate diagnosis is essential because what prevents or treats one type of stone may actually cause another. The only way to be sure of a stone’s identity is to have it analyzed. However, your veterinarian can make an educated guess based on urinary pH; the dog’s age, breed, and sex; the identification of urinary crystals; radiographic (X-ray) density; whether infection is present; and certain blood test abnormalities.

When should your veterinarian become involved? As soon as you notice symptoms or, if your dog’s breed is strongly predisposed to developing stones, even sooner. Not all bladder and kidney stones are dangerous; some are flushed during urination while still small in size and others remain unnoticed in the kidney or bladder. Stones don’t create complications until they interfere with urination. It’s important to become familiar with urinary stone symptoms, which include straining to urinate, blood or pus in the urine, painful or difficult urination, increased frequency of urination, the passage of small amounts of urine, licking the genitals more than usual, “accidents” in house-trained dogs, or discomfort in the lower back.

A dog who strains and then releases a flood of urine may have just passed a stone and should be examined. If you can find the stone, take it with you so it can be accurately identified. A dog who is unable to urinate needs immediate medical attention because a plugged urethra can cause urine to back up into the system, resulting in a ruptured bladder or kidney failure. A bladder that has been stretched can lose muscle tone, making it difficult to empty completely, which can lead to infection or more stones. Bladder stones are much less likely to cause an obstruction in females than in male dogs, thanks to the shorter and wider urethra in females.

Increasing urine volume and opportunities to void urine are important factors in preventing uroliths of all types. The more a dog drinks and the more frequently he urinates, the less concentrated his urine and the less likely the formation of crystals that can become stones. Encourage your dog to drink more by adding water to his food and offering flavored water in addition to plain. For dogs with urate stones, you can add salt
to food to increase thirst (start with a pinch, watch your dog’s response, and add more in small steps until your dog drinks more water), but added salt should be avoided for dogs prone to forming cystine, calcium phosphate, or silica stones.

Be sure that your dog has frequent opportunities to urinate because when dogs have to hold their urine for extended periods, their urine is more likely to become supersaturated, at which point its minerals begin to precipitate out as crystals.

Treating and Preventing Urate Stones

The key to keeping urate-forming dogs healthy is to feed them a low-purine diet. Without the purines that trigger urate stone formation, even susceptible dogs can lead normal lives.

Some Dalmatian owners believe that giving dogs who are prone to forming stones only mineral-free distilled water has helped prevent more stones from forming. However, no scientific evidence for this exists. The quantity of water the dog consumes may be more important than its mineral content.

Because urate stones develop in acidic urine, an added prevention strategy is to feed foods that have an alkalizing effect. In general, meat is an acidifying food while most fruits and vegetables have an alkalizing effect. Vegetarian dog foods are sometimes recommended for this reason, but we consider vegetarian foods incomplete. Also, foods that use soy as a protein source are inappropriate for dogs who are prone to forming urate stones because soy is high in purines. However, soy-free vegetarian foods could be used as a base to which eggs, yogurt, cheese, and other low-purine protein sources are added.

The same is true of some dog food pre-mixes, such as Sojo’s Grain Free Dog Food Mix. Sojo’s Complete is based on sweet potatoes, turkey, and eggs and might also be appropriate for dogs with hyperuricosuria (excessive amounts of uric acid in the urine). Avoid mixes that contain a lot of alfalfa, oats, barley, or other foods that are high in purines (see “Purine Content of Various Foods”).

Urate stones can be dissolved with a combination of a low-purine diet, urine alkalization, and control of secondary infections. The target range of urine pH during dissolution is 7.0 to 7.5. Care must be taken not to alkalize too much, making the urine pH higher than 7.5, because that can lead to the formation of calcium phosphate stones or shells around urate stones, making them difficult or impossible to dissolve.

The xanthine oxidase inhibitor allopurinol (brand name Zyloprim) may be prescribed short-term to reduce or inhibit the dog’s production of uric acid, which can help dissolve stones. This drug should not be used in patients with portosystemic shunts. A low-purine diet must be fed while giving allopurinol, as otherwise it predisposes dogs to the formation of xanthine stones and shells, making dissolution difficult. The long-term use of allopurinol as a preventative is not recommended but can be considered at low dosages when problems persist despite other treatment.

On average, it takes about 3½ months for stones to dissolve using allopurinol in combination with a low-purine diet and urinary alkalizination, but it can take as little as one month or as long as 18 months. As stones become smaller, they may move into the urethra and cause obstruction.

Some cases of severe kidney stones presumed to be ammonium urate resolved spontaneously following surgical shunt correction alone.

Monitoring Urine pH

Urinary pH can be monitored using test strips with the goal of maintaining a neutral (7.0) pH in dogs prone to urate stones. Test strips can be held in the urine stream or urine can be collected in a paper cup, bowl, or other container for testing. Collecting the urine makes it possible to check for tiny stones or gritty “gravel” that the dog might be passing as well as any blood, pus, or other indications of infection. The recommended testing time is first thing in the morning, before feeding.

A change in urinary pH does not indicate the presence or absence of stones but does reveal conditions that are more or less likely to trigger stone production and will show the effect of dietary changes on the dog’s pH. A sudden jump in pH may signal a bacterial infection, which requires medical attention. It’s important to control urinary tract infections in dogs prone to forming stones. If urine remains acidic and crystalluria (the formation of urinary crystals) persists, alkalizing agents such as potassium citrate or sodium bicarbonate can be added.

Testing for Canine Hyperuricosuria

Hyperuricosuria is characterized by the excretion of high levels of uric acid leading to urate stone formation. After the defective gene that causes hyperuricosuria was discovered by researchers at the University of California, Davis, a test was developed to detect the mutation associated with the disease. This test is valid for all breeds.

Dogs affected by hyperuricosuria have two copies of the mutation, one inherited from each parent. Dogs with only one copy of the mutation are symptom-free carriers who pass the mutation on to an average of 50 percent of their offspring. Breeders can use DNA testing to identify carriers and effectively erradicate hyperuricosuria from their lines in breeds other than Dalmatians. (At present, all Dalmatians registered in the United States are affected by the mutation. See “LUA Dalmatians”. When both dam and sire are clear of the mutation, all of their puppies will be clear as well.

The DNA test identifies dogs in three categories: clear of hyperuricosuria (the dog has two copies of the normal gene and no mutation), a carrier of hyperuricosuria (the dog has one copy of the normal gene and one of the mutation), or affected with hyperuricosuria (the dog has two copies of the mutation, causing high acid levels that can lead to urate stone disorders).

All dogs affected with hyperurico-suria are potential urate stone-formers. At any time, a combination of high-purine foods, insufficient fluids, insufficient opportunities to urinate, and overly acidic urine might cause the formation of urate uroliths. Periodic routine urinalysis to check for urate crystals can be used to monitor dogs with hyperuricosuria. The most accurate sample for this purpose is collected in the morning, assuming the dog has not urinated all night, so the urine is more concentrated. The sample should be collected in a clean glass, plastic, or other chemically inert container. To avoid false crystallization, the sample should not be refrigerated and should be tested within 30 minutes or as soon as possible.

While many Dalmatians never generate stones, it isn’t safe to assume that they can’t. In one widely reported case, a 13-year-old Dalmatian who had never shown symptoms began receiving two spoonfuls of a new supplement per day. Prior to this, his diet had been the same for all of his adult life. Within a few weeks, his urinary tract became completely obstructed by urate stones. While the supplement was low in protein (only 14 percent), its protein source was liver, a high-purine food.

The Low-Purine Diet

Reducing purines in food is an effective way to reduce the risk of urate stones. Because most high-protein foods are also high in purines, veterinarians often recommend switching urate-forming dogs to a low-protein diet. However, it is not the quantity of protein that causes urate problems; it’s the type of protein. Dalmatians and other urate-prone dogs thrive on protein-rich diets that are low in purines, while these same dogs can develop stones after eating low-protein foods that contain even small amounts of high-purine ingredients. Low-protein diets can lead to nutritional deficiencies when fed to adult dogs for long periods, and they are not appropriate for puppies and pregnant or nursing females at all. (See “The Side Effects of Low-Protein Diets,” below.)

Because it’s difficult to find commercial pet foods that are low in purines without being nutritionally deficient, many owners of urate-forming dogs feed a home-prepared diet. Australian veterinarian Ian Billinghurst, whose book Give Your Dog a Bone introduced the BARF (Bones and Raw Food or Biologically Appropriate Raw Food) diet to dog lovers around the world, describes how to adapt his menus for urate-forming dogs in a report posted at several websites.

“In Western countries today,” he says, “I am led to believe that a typical homemade diet for stone formers would contain about 80 percent rice, 10 percent vegetables, and 5 percent meat. This is an appalling diet to feed any dog. This is borne out by dogs forced to endure it. They suffer from numerous problems including continual hunger, a lack of energy, poor coat condition, and difficulty in maintaining weight or severe losses of weight.” Such a diet is not only deficient in protein, fat, vitamins, and minerals, he says, but it does not prevent stone formation.

The raw meaty bones Dr. Billinghurst recommends are chicken necks, chicken backs, chicken wings, and turkey necks. “Use plenty of puréed or pulped vegetables,” he says, “including lots of leafy greens. The diet could also include eggs, cottage or ricotta cheese, yogurt, and olive or flaxseed oil, supplemented with vitamin B complex, vitamin E, kelp, and a teaspoon of cod liver oil several times a week.” Cod liver oil is important for urate-forming dogs fed a homemade diet that does not include liver.

Feeding a changing variety of eggs, cheese, dairy products, and small amounts of medium-purine meat, poultry, and fish along with low-purine vegetables, fruits, and supplements – as well as ample water to keep urine diluted – can help any urate-forming dog stay healthy and happy.

Cystine Stones

Cystine is a sulfur-containing amino acid essential to the health of skin, hair, bones, and connective tissue. Excess cystine is normally filtered by the kidneys so that it doesn’t enter the urine, but some dogs are born with cystinuria, an inherited metabolic disorder that prevents this filtering action. When cystine passes into the urine, it can form crystals and uroliths.

Cystine stones are rare, representing 1 percent or less of uroliths identified in laboratories. Although any breed can develop cystinuria, certain breeds are most affected. An estimated 10 percent of male Mastiffs have cystinuria. It is also common in Newfoundlands, English Bulldogs, Scottish Deerhounds, Dachshunds, Staffordshire Bull Terriers, and Chihuahuas. Cystine stones are faintly radiopaque, which makes them more difficult to see on X-rays than stones that contain calcium.

There are at least two types of cystinuria. The more severe form affects Newfoundlands and, rarely, Labrador Retrievers, and possibly some other breeds and mixes. In these dogs, males and females are equally affected (though as always, males are more likely to become obstructed). The age at onset can be as young as 6 months to 1 year. Recurrence of stones following surgery is more rapid in these dogs, and they are more likely to form kidney stones. The gene that causes cystinuria in these breeds has been identified and a simple, reliable genetic test can identify both affected dogs and carriers.

In other breeds, dogs with cystinuria are almost always male. No genetic test is available for them, though the University of Pennsylvania School of Veterinary Medicine (PennVet) is collecting blood samples from affected Mastiffs and their genetic relatives to try to produce a DNA test. The average age at onset of clinical signs is about 5 years.

A basic urinalysis can sometimes detect cystine in urine, though this is the least reliable method of detection. A nitroprusside (NP) test performed at the University of Pennsylvania (PennGen) is considered more reliable. A quantitative amino acid analysis performed by PennGen or a human medical laboratory is most reliable but very expensive. If cystine is found in the urine on any of these tests, the diagnosis is considered positive for cystinuria, though that doesn’t necessarily mean the dog will form stones.

Unfortunately, a negative result on any of these tests does not guarantee that the dog is “clear.” Note that sulfa drugs and supplements, including sulfa antibiotics, MSM, and Deramaxx, may cause false positive results.

“Cystinuria is a particularly frustrating condition to manage,” says San Francisco Chronicle pet columnist Christie Keith, who started a Canine Cystinuria e-mail list and website when one of her Scottish Deerhounds developed cystine uroliths. “A dog known to have cystinuria may go his whole life without obstructing, while another dog, never diagnosed, can have a life-threatening obstruction as his first symptom. It’s not known at this time why some dogs with cystinuria form stones and others do not.”

Cystine, like all amino acids, is one of the building blocks of protein. That’s why most veterinarians (including many kidney specialists) prescribe a low-protein diet, speculating that reducing the cystine supply will reduce the formation of cystine stones. Another common recommendation is to alkalize the dog’s urine because cystine stones form in acid urine.

Unfortunately, says Keith, these strategies are ineffective. “Most of us on the Canine Cystinuria list have found that diet and urinary alkalization have failed to prevent our dogs from forming stones,” she says, “and they have sometimes caused other problems, including other types of stones that form in alkaline urine. If the urine goes into acidity even briefly, cystine stones can form and they won’t dissolve just because alkaline urine is achieved soon after. In addition, feeding ultra-low-protein diets can be dangerous, especially to giant breeds and breeds prone to cardiomyopathy.” (See “The Side Effects of Low-Protein Diets”, below.)

It’s important to provide your dog with extra fluids and frequent opportunities to urinate in order to keep his urine from becoming supersaturated. Salt should not be added to increase fluid consumption for dogs with cystinuria; according to studies conducted on humans, a low-sodium diet may decrease the amount of cystine in the urine.

If urine alkalization is attempted, the target pH is 7.0 to 7.5; higher can predispose dogs to calcium phosphate uroliths. Potassium citrate is preferred for alkalization when needed rather than sodium bicarbonate because sodium may enhance cystinuria.

Cystine stones cannot be dissolved with diet or supplements, but two prescription drugs can help dissolve and prevent them. Cuprimine (d-penicillamine) has potentially serious side effects but is less expensive and more readily available, and many dogs do well on it. According to Keith, Thiola (tiopronin, also referred to as 2-mercaptopropionylglycine or 2‑MPG), has fewer side effects, but one of them is the depletion of the owner’s bank account. Maintaining a giant-breed dog on Thiola can cost as much as $500 per month. Because the severity of cystinuria tends to decline with age, the dosage of preventative medications can sometimes be decreased or even stopped.

Dissolution requires a combination of medication, low-protein diet, and urinary alkalinization. Even then it may not be successful or practical for a dog with numerous stones. When it does work, dissolution commonly takes one to three months.

For some dogs, the solution has come not from prevention strategies or medication but from surgery. “It sounds extreme,” says Keith, “but many of us who have stone-forming male dogs with cystinuria have opted for a scrotal urethrostomy. This surgery redirects the dog’s urethra away from the penis to a new, surgically created opening in front of the scrotum.”

Cystinuria

The wider opening that results enables males to more easily pass small stones and help prevent urinary blockages. “While future obstruction is not impossible,” says Keith, “this procedure reduces the risk substantially.” Still, she cautions, this surgery should not be undertaken lightly. It’s expensive, requiring the expertise of a skilled board-certified surgeon, and because the affected area is rich in blood vessels, there can be significant post-surgical bleeding, though the surgery is not particularly painful.

“The good news,” she says, “is that many dogs, including stone-formers and those who had serious complications when their condition was first diagnosed, have lived not just normal but longer-than-normal lives.”

The Remaining Three

Like cystine stones, stones composed of xanthine, calcium phosphate, and silica are rare, each representing less than 1 percent of analyzed uroliths. Ironically, they often occur while the patient is undergoing treatment for the prevention of other stones.

– Although xanthine is a type of purine, xanthine stones are associated not with diet but with the use of allopurinol. Xanthine crystals almost never occur naturally, though they have been reported in some cats, Cavalier King Charles Spaniels, and Dachshunds. The average age at onset is 6 to 7 years. Like urate stones, they are radiolucent; that is, they cannot be seen on X-rays.

In some cases, discontinuing allopurinol while feeding a low-purine diet has dissolved xanthine uroliths, but in general, treatment consists of surgical removal, urohydropropulsion (a nonsurgical procedure performed with the dog under anesthetic, in which the bladder is filled with saline through a catheter, and the bladder is manually squeezed to force stones out through the urethra), or lithotripsy (the use of high-energy sound waves to break up the stones).

A low-protein diet is usually recommended for dogs receiving allopurinol treatment (to help prevent formation of xanthine uroliths); but again, what’s really needed is a low-purine diet.

– Calcium phosphate stones often develop when the urine is over-alkalized (at a pH greater than 7.5), in an effort to prevent the formation of calcium oxalate, urate, or cystine stones. The average age at onset is 7 to 8 years, but these stones have been found in dogs of all ages, including puppies and seniors.

Calcium phosphate stones are commonly called apatite uroliths, with hydroxyapatite and carbonate apatite the most common. They are radiographically dense, so they are easily seen on X-rays. Uroliths composed primarily of calcium phosphate are rare and associated with metabolic disorders such as hyperadrenocorticism (Cushing’s disease), hypercalcemia, renal tubular acidosis, or excessive calcium and phosphorus in the diet.

Because they cannot be dissolved medically, these stones are usually removed surgically, though that may be unnecessary if the stones are clinically inactive (not growing or causing problems). They have been known to dissolve spontaneously following parathyroidectomy surgery for primary hyperparathyroidism. Unless the patient has a metabolic condition that contributes to calcium phosphate stones, the strategies used for prevention are similar to those used for calcium oxalate stones, although it’s important to avoid excessive alkalization of the urine.

Medications that can enhance calcium excretion, including prednisone and furosemide (Lasix), should be avoided if possible. Salt should not be added to the diet, as sodium increases urinary calcium.

– Silica stones are most common in male German Shepherds, Old English Sheepdogs, Golden Retrievers, and Labrador Retrievers, although other breeds and mixed breed dogs have developed them as well. More than 95 percent of silica stones occur in males. The problem can develop in dogs as young as four months or as old as 12 years, but most stones occur in dogs aged 6 to 9 years. Silica stones are radiopaque and can be seen on X-rays. No relationship has been found between urinary pH and silicate urolith formation.

The formation of silica stones is associated with diets high in cereal grains, particularly corn gluten and soy bean hulls, both of which are high in silicates. Corn gluten and soy bean hulls (also called soybean mill run) are ingredients in low-quality prescription diets and dog foods.

Other foods that are high in silica, and which should be avoided, include the hulls of wheat, oats, and rice (hulls are found in whole grains); sugar beets; sugar cane pulp; seafood; potatoes and other root vegetables; onions (which shouldn’t be fed to dogs, anyway); bell peppers; asparagus; cabbage; carrots; apples; oranges; cherries; nuts and seeds; grains; soybeans; and the herbs alfalfa, horsetail, comfrey, dandelion, and nettles. Bentonite clay, a mineral supplement, is also high in silicates.

Because no drug or diet dissolves silica stones, they may be removed surgically, flushed out with urohydropropulsion, or shattered with lithotripsy; no treatment may be required for clinically inactive stones. Silica stones do not usually recur, but it makes sense to feed a diet that is high in protein from animal sources and low in plant foods, including fiber and bran. As with all stones, keep the urine diluted by increasing fluids and giving your dog frequent opportunities to urinate. Don’t add salt, which is another source of silica.

Dogs who drink water from sources containing sand may develop silica uroliths, so water that contains silica (a primary mineral in sand) should be avoided. In hard-water areas, distilled water is recommended for dogs who form silica stones. Silica stones have also been associated with pica, an eating disorder that causes dogs to eat dirt, rocks, and other non-food items.

Mixed and Compound Uroliths

Most bladder stones are caused by a single type of mineral. Sometimes a stone consists of two or more minerals in approximately equal proportions, in which case it is called a mixed urolith. These stones are rare, comprising only 2 percent of analyzed uroliths.

A stone that consists of a core mineral surrounded by a smaller amount of a different mineral is called a compound urolith. These make up 10 to 12 percent of analyzed stones. Compound uroliths can sometimes be identified based on differing radiographic density of their stone layers.

Compound uroliths develop when a stone’s environment changes, such as when a struvite stone is treated by reducing urinary pH, magnesium, and phosphorus, resulting in a calcium oxalate shell around the struvite core. Struvite shells caused by infection commonly form over calcium oxalate and other cores, especially since all stones predispose dogs to bladder infections.

One treatment strategy is to try to dissolve the outer layer first. This is especially effective for stones with an infection-induced struvite shell, which make up more than 80 percent of compound uroliths with cores other than struvite. The struvite shell should dissolve with appropriate antibiotic or infection-fighting treatment. X-rays can be used to monitor dissolution. Once the outer shell disappears, treatment strategy switches to the inner core, also called the nucleus, or the stones may then be small enough to remove by urohydropropulsion.

More than half of the compound uroliths analyzed in 2002 by the Minnesota Urolith Center contained a calcium oxalate core, and almost all of these were surrounded by a struvite shell caused by infection. Unlike calcium oxalate uroliths, these compound uroliths were found primarily in female dogs; again, this is because the female dogs’ anatomy makes them more susceptible to urinary tract infections, which play a role in causing struvite stones. Treatment and prevention should be focused on controlling infections and reducing the risk of calcium oxalate stones.

Stones with a struvite core made up amost a quarter of compound uroliths, more than half of which were surrounded by a calcium phosphate shell and most of the rest by a calcium oxalate shell. As is common with infection-induced stones, most of these dogs were female.

Urinary acidifiers can contribute to urinary calcium that leads to the formation of calcium-containing stones. Treatment is the same as for struvites: appropriate medication for the infection and possibly a reduced-protein diet short-term to help dissolve the stones quickly. Urinary acidification is not recommended due to the increased risk of calcium oxalate and calcium phosphate formation.

Small percentages (3 to 5 percent each) of compound uroliths were comprised of the following:

- Silica core. Most of these had a calcium oxalate shell and were found in male dogs. Since both silica and calcium oxalate stones are associated with plant-based foods, diets containing substantial plant proteins should be avoided.

– Calcium phosphate core surrounded by struvite or calcium oxalate shells. These are treated the same way as struvite or calcium oxalate stones.

– Urate core, most of which were surrounded by struvite. Treatment is aimed at controlling the infection along with management of the urate core.

– Compound uroliths with a core or shell of xanthine are treated by discontinuing or reducing the dose of allopurinol.

Sulfa drugs may create a shell around struvite uroliths when used at high doses for prolonged periods, or in dogs with acidic or highly concentrated urine. For this reason, sulfa drugs should be avoided when treating lower urinary tract (bladder) infections, particularly for dogs known to have stones or one of these risk factors.

Preventive treatment should focus on whatever minerals comprised the stone’s inner core. As with all types of stones, increasing fluid intake and opportunities to urinate are recommended. Adding salt to the diet is not recommended, however, as it increases urinary calcium and calcium is commonly found in uroliths.

The Side Effects of Low-Protein Diets

Without sufficient protein in the diet, protein is pulled from muscles to meet the body’s requirements. Nutritionally inadequate, low-protein diets should never be fed to puppies or dogs who are pregnant or nursing, and they can cause health problems if given to adult dogs for prolonged periods.

According to the Merck Veterinary Manual (9th Edition, 2008), “The signs produced by protein deficiency or an improper protein-to-calorie ratio may include any or all of the
following: weight loss, skeletal muscle atrophy, dull unkempt coat, anorexia, reproductive problems, persistent unresponsive parasitism or low-grade microbial infection, impaired protection via vaccination, rapid weight loss after injury or during
disease, and failure to respond properly to treatment of injury or disease.”

Ultra-low-protein diets such as Hill’s Prescription u/d have been linked to dilated cardiomyopathy (DCM) in English Bulldogs, Dalmatians, and other breeds. Dogs with cystinuria, which predisposes dogs to carnitine deficiency even when a normal-protein diet is fed, are particularly at risk. Some Newfoundland dogs are prone to taurine deficiency leading to DCM even when fed regular commercial diets, especially lamb and
rice diets, though many manufacturers now add taurine to their lamb and rice diets to help prevent this side effect.

According to a study of cardiac function in healthy dogs fed protein-restricted diets published in the American Journal of Veterinary Research in 2001, “Dogs fed protein-restricted diets can develop decreased taurine concentrations…The possibility exists that AAFCO [Association Of American Feed Control Officials] recommended minimum requirements are not adequate for dogs consuming protein-restricted diets. Our results also revealed that, similar to cats, dogs can develop DCM secondary to taurine deficiency, and taurine supplementation can result in substantial improvement in cardiac function.”

Low-protein diets are not needed in most cases to prevent the development of kidney or bladder stones. lf you choose to feed a low-protein diet, you should supplement with carnitine and taurine to help prevent the development of DCM. Dogs with cystinuria may benefit from supplementation even if fed a regular diet. Suggested preventative dosages are 25 to 50 mg L-carnitine and 5 mg taurine per pound of body weight two or three times a day. For example, a 50-pound dog should receive 1,250 to 2,500 mg L-carnitine and 250 mg taurine twice or three times a day. Higher dosages are needed to treat DCM.

You can also add eggs and dairy products to a low-protein diet for dogs with hyperuricosuria to increase protein.

Preventing Recurrence

Once your dog’s stones are successfully treated, you’ll want to use the strategies described in this article to help keep them from coming back. Stone-forming dogs can be monitored by their veterinarians with X‑rays, ultrasound, and urinalyses.

Infection-induced struvites can recur in as little as a few days to a few weeks, while calcium oxalate and silica stones may take a few months to recur. Cystine and urate stones can recur rapidly. Some dogs continue to form stones despite diet changes and medical therapy. For them the key is monitoring with radiographic imaging (X-rays or ultrasound) at least every 3 to 6 months (more often to start with and for rapidly recurring types) in order to detect stones while they are still small enough to pass through the urethra using urohydropropulsion or catheter-assisted retrieval.

A final solution for males with recurring stone blockages is urethrostomy surgery, which redirects the flow of urine to avoid its normal narrow passage.

CJ Puotinen is the author of The Encyclopedia of Natural Pet Care and other holistic health books. She lives in Montana, and is a frequent contributor to Whole Dog Journal. San Francisco Bay Area resident Mary Straus has spent more than a decade investigating and writing about canine health and nutrition topics for her website, DogAware.com.

My Dog Wakes Up Too Early!

By
Pat Miller, CBCC-KA, CPDT-KA
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dog wakes up too early

Those last few minutes of sleep before the alarm goes off are a treasured sanctuary where we hide in dreams before the reality of the world intrudes. Few dog owners appreciate it when their dog wakes up too early, robbing them of those golden moments. But some dogs seem to have an uncanny knack for anticipating the alarm by 15 or 20 minutes, and manage to routinely do just that.

Of course, puppy owners expect to be awakened by their baby dogs – or they should. It’s unreasonable to think a young puppy can make it through the night without a potty break. Crated or otherwise appropriately confined, even an eight-week-old puppy will normally cry when his bowels and bladder need emptying, rather than soil his own bed. When this happens you must get up and take your pup out to empty his bladder and bowels, and then immediately return him to his crate so he doesn’t learn to wake you up for a wee-hours play or cuddle session.

Adult dogs, however, barring a health problem, should wait for you to get up rather than pushing back your wake-up time in eager anticipation of breakfast, or other morning activities. If your grown-up dog has made it his mission to make sure you’re never late for work (or breakfast) by waking you up every morning before your alarm does, try this:

1) Rule out medical conditions.

Make sure your dog doesn’t have a legitimate reason for getting up early. If he has a urinary tract infection or digestive upset, or some other medical issue that affects his elimination habits or otherwise makes him uncomfortable, he may have  to go out 30 minutes (or more!) before you normally get up to let him out.

2) If your dog wakes up too early, tire him out the night before.

A tired dog is a well-behaved happy dog and  a late sleeper. Exercise uses up much of the energy that he presently can’t wait to wake you up with – and also releases endorphins, which regulate mood, producing a feeling of well-being. Tiredness promotes sleeping in, and endorphins help reduce anxieties that may play a role in his early-bird activities.

3) Feed him earlier/ better; make “last call” later.

Increase the time between your dog’s last meal and his last bathroom opportunity to minimize the chance that he’s waking you up because he really has to go. It only takes a few “I really have to go” mornings to set an early-riser routine, especially when rising is reinforced with, “Well, we’re up now, no point in going back to bed . . . here’s your breakfast!” Don’t forget that high-quality diets are more digestible, which reduces fecal output, which reduces early-morning urgency.

4) Reduce stimuli in the bedroom.

The less there is to awaken your dog, the less likely he is to awaken you. Close the drapes. Turn off the television. Turn on a white noise machine or soft classical music. Cover his crate. He is crated, isn’t he? If not, restricting his movement is a simple way of preventing him from pouncing on you at 5:30 am. If he doesn’t crate well, perhaps you can use an exercise pen, or a baby gate to keep him in the bathroom next to your bedroom.

5) If your dog wakes up too early, train him to sleep in.

If these management solutions alone don’t work, you may be able to train him to sleep later. If your normal wake-up time is 6:30 am and he consistently wakes you at 6:15, for one week set your alarm for 6:05. For the second week, set it for 6:10. Do not get up before the alarm goes off (unless you’re pretty sure he has an urgency problem)! This will condition him to the sound of the alarm as his cue to wake up. Each week set the alarm forward five more minutes until you’re at your desired wake-up time. It might take you a few weeks to get there, but it’s gloriously simple, and it works. Unless you have young children who starting running through the house at 5:00 am, or garbage trucks start rumbling and banging down your street every morning at 5:30 – in which case all bets are off!

Read Next: Should Your Dog Sleep on the Bed with You?

Problems With Artificial Preservatives in Dog Food

By
Mary Straus
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A food label showing artificial preservatives in dog food.

[Updated August 10, 2017]

Recently we’ve heard from a number of dog owners who are concerned about the use of ethoxyquin to preserve fish meal that is used in dog foods. We’ve had one e-mail forwarded to us several times expressing worry over links between undeclared ethoxyquin in pet foods and canine cancer.

A dog deep into a bowl of dog food kibble.

We have long advised owners to pass over dog food that contains artificial preservatives such as butylated hydroxyanisole (BHA), butylated hydroxytoluene (BHT), tert-butyl hydroquinone (TBHQ), propyl gallate, and ethoxyquin, in favor of products made with natural preservatives, such as tocopherols (vitamin E), citric acid (vitamin C), and rosemary extract.

Though synthetic preservatives were once – as recently as 20 years ago – the usual preservative found in all dry dog foods, today, they appear only on the labels of low-cost and lower-quality products. Pet food companies appreciate the fact that artificial preservatives are less expensive, and they preserve food longer and more reliably than their natural counterparts. But owners who have their dogs’ life-long health foremost in their minds are willing to pay more for more natural products that don’t needlessly expose their dogs to potentially toxic chemicals.

It is possible, however, for pet foods to contain ethoxyquin or other artificial preservatives even if those substances don’t appear on the list of ingredients.

Preservatives Myth Busting

When we get worried (or panicked) mail about this issue, the writer is usually concerned about fish meal that’s been loaded with ethoxyquin. The apparent source of this concern is the fact that the U.S. Coast Guard requires that fish meal that is transported on boats be treated with ethoxyquin, to prevent the volatile fatty acids in the product from spontaneously combusting while traveling on the high seas.

It turns out, though, that this is just part of the story. Only fish meal that is shipped by boat must be treated to prevent combustion; plenty of fish meal is manufactured on land and is not subject to any Coast Guard regulations. Also, the Coast Guard allows the use of other antioxidants to treat the fish meal – and even permits untreated fish meal to be shipped, if the shipper can provide documentation that the product does not display self-heating properties.

What seems to be a surprise to most dog owners is the fact that all animal protein meals – and animal fats – are treated by their manufacturers with preservatives. It’s not just fish meal! Chicken meal, lamb meal, beef meal . . . preservatives are added to all of them.

As alarming as this might sound, it’s only prudent; without some sort of preservation, the fat in these ingredients is subject to oxidation and rancidity. Oxidation is an irreversible process, so antioxidants must be added as early in the food manufacturing process as possible. However, natural preservatives can be used; when buying ingredients for use in their products, the preservation system used is just one of a number of specifications the pet food manufacturers can make. Naturally preserved meat meals cost more and are not as shelf-stable as artificially preserved meat meals, so the decision to use only naturally preserved animal protein meals in their products is a costly and deliberate choice that pet food manufacturers must make.

Preservatives Not on the Label

It’s the fat in meat or poultry meal that needs protection from oxidation. Animal protein meals (i.e., “chicken meal,” “lamb meal,” etc.) usually contain 10 to 14 percent fat. While the preservative used to protect the major fat sources in a dog food (such as “chicken fat”) must be declared on pet food labels, the amount of preservative used in protein meals is generally considered low enough to meet the definition of an “incidental additive,” which is not required to appear on the product label. At least, that’s one explanation for why the preservatives used in protein meals don’t have to appear on pet food labels.

A more prevalent explanation is that there is no legal requirement for pet food makers to disclose substances that were added to an ingredient before it reaches the pet food manufacturing plant. We’ve been told countless times that a pet food maker is responsible for disclosing only the ingredients they themselves mix in during the manufacture of the pet food. In other words, “We didn’t put ethoxyquin in the fish meal; it was already there when we bought the meal! And because we didn’t put ethoxyquin in our pet food, we don’t have to list it among our products’ ingredients.”

We’ve heard this claim so many times, in fact, that we were surprised to learn that it’s not wholly accurate. Dave Dzanis, DVM, PhD, DACVN, a consultant on animal nutrition, labeling, and regulation, writes in his December 2009 column in the trade publication Petfood Industry:

“For a labeling exemption as an ‘incidental additive’ to apply, the level in the final product would have to be low enough to where it no longer had any technical or functional effect [21 CFR 501.100(a)(3)(i)]. Considering that fish meal processors may add 1,000 ppm or more, the residual amount of ethoxyquin in the petfood still could be functional, hence would have to be declared.

“Also, FDA regulation 21 CFR 573.380 expressly specifies that any animal feed containing ethoxyquin must declare it, which is unique language compared to the codified requirements for other approved food additives. That statement can be interpreted as superseding any labeling exemption. In fact, if memory serves me, in the 1990s FDA did advise that ethoxyquin must be declared whether added directly or indirectly, irrespective of source or level.”

We’re not sure how this information can be reconciled with the fact that many pet food companies use fish meal that has been preserved with ethoxyquin, yet ethoxyquin does not appear on the label. Perhaps most companies do not fully understand or have a different interpretation of these rules, and the regulations are simply not enforced.

A Closer Look at Ethoxyquin

Ethoxyquin is a chemical antioxidant and was approved as a pet food additive in 1959. It is used to preserve certain spices (chili powder, paprika, and ground chili only), and is also used as a pesticide and a rubber preservative. Residual levels from animal feed are allowed in meat, poultry, and eggs for human consumption.

The FDA’s Center for Veterinary Medicine (CVM) began receiving reports in 1988 of health issues that pet owners and some veterinarians suspected could be linked to ethoxyquin in pet foods, such as allergic reactions, skin problems, major organ failure, behavior problems, and cancer. Studies done by Monsanto (the manufacturer of ethoxyquin) at the request of the CVM, showed dose-dependent effects on liver enzymes and pigment. As a result, in 1997 the CVM asked the pet food industry to voluntarily lower the maximum level of ethoxyquin in dog foods from 150 ppm (parts per million) to 75 ppm. It said that most pet foods never exceeded the lower amount, even before this recommended change.

Is this level safe? According to a document produced by the Environmental Protection Agency (EPA), “Dogs are more susceptible to ethoxyquin toxicity than rats, with elevated liver enzymes and microscopic findings in the liver occurring at doses as low as 4 mg/kg/day over a 90-day feeding period.” The “4 mg/kg” means 4 mg ethoxyquin per kilogram of the dog’s body weight (not the weight of the food).

Per CVM calculations, 4 mg/kg body weight is the equivalent of 160 ppm in food, just barely above the upper limit that is still allowed in pet food. It’s possible that longer-term ingestion could reduce the amount needed to cause adverse effects and increase the potential for harm. In addition, dogs who eat more food in relation to their body weight, such as puppies, nursing females, and working or other very active dogs, are at risk of exceeding the amount known to cause liver damage.

Let’s look at the fish meal that is processed at sea and treated with ethoxyquin at time of production. Coast Guard regulations say that this fish meal must contain at least 100 ppm ethoxyquin at time of shipment. It’s questionable, though, how much ethoxyquin remains in a finished pet food made with this fish meal. The amount of fish meal used and the method and temperature of the dog food’s manufacture will affect the amount of ethoxyquin present in the final product. We’ve seen claims from companies whose dog foods contain fish meal preserved with ethoxyquin that the foods contain 5 ppm or less ethoxyquin.

Is this lower level safe? No one knows for sure, but it’s certainly less toxic than the amounts that the FDA allows in pet food. And it’s within the limits allowed in some human foods (0.5 to 5 ppm in meat and fat, with higher amounts allowed for spices).

The FDA and pet food industry officials defend the use of ethoxyquin, saying that ethoxyquin is safer than rancid fats. While this may be true, artificial preservatives are not the only way to prevent rancidity. In addition, if ethoxyquin is safe, why is it not permitted to be added to human foods (other than three spices), and why is the acceptable level for pet foods 50 times the residual amount allowed in human food?

Other Artificial Preservatives

Some dog breeders and consumer advocates suspect ethoxyquin of causing cancer, though studies don’t seem to bear that out except at very high levels (5,000 ppm or more). On this point, the EPA concluded, “potential cancer risk is below the Agency’s level of concern.” The artificial preservatives BHA and BHT are considered more likely carcinogens.

BHA and BHT are used in human and pet foods to keep fats from going rancid. Both have been linked to cancer in laboratory animals; it’s unknown whether they cause the same in people and dogs. There is evidence that certain people may have difficulty metabolizing BHA and BHT, resulting in health and behavior changes. Again, we don’t know if the same is true for our dogs.

Yet Another Matter of Trust

In the past, we’ve felt confident in recommending dog foods whose labels do not reflect the inclusion of artificial preservatives. That’s because we were under the impression that the maximum amount of artificial preservatives that could be present in a food whose label did not include them couldn’t possibly be high enough to cause harm. Since “doing the math” on the amount of synthetic antioxidants that can be present in a food whose label does not reflect its inclusion, though, we’ve become uneasy. It no longer seems sufficient to trust that a label review will always reveal the presence of artificial preservatives.

How then can a consumer find out if their dog’s food contains ethoxyquin, BHA, BHT, or other artificial preservatives? Unfortunately, there are no easy answers. You can contact the companies or check their websites, in an effort to find out if they use only naturally preserved meat meals in their foods. Some companies have started making “ethoxyquin-free” claims on their labels and product literature. One would have to trust the company’s answer, though; short of conducting expensive laboratory tests, there is no way to verify these claims. And even usually trustworthy companies can be duped by a contract manufacturer or ingredient supplier.

If you are adamant about avoiding any amount of artificial preservative in your dog’s diet, you would be well-advised to switch to a diet that does not contain meat meals. Canned foods and frozen diets are generally made with fresh and frozen animal ingredients, which are not usually treated with preservatives. Of course, feeding your dog a well-planned home-prepared diet made of fresh ingredients is the only way to be absolutely certain of ingredient content and quality.

Preventing Bladder and Kidney Stones in Dogs

By
CJ Puotinen and Mary Straus
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Bladder and kidney stones are serious problems in dogs as well as people. These conditions – which are also known as uroliths or urinary calculi – can be excruciatingly painful as well as potentially fatal. Fortunately, informed caregivers can do much to prevent the formation of stones and in some cases actually help treat stones that develop.

Last month, we described struvite stones. Struvites contain magnesium, ammonium, and phosphate. They almost always occur in the bladder in combination with a bacterial infection and are most frequently found in small-breed females.

This month, we examine calcium oxalate or “CaOx” stones.

Calcium oxalate stones
CaOx stones occur in both the bladder (lower urinary tract) and kidneys (upper urinary tract) of male and female dogs. Most calcium oxalate uroliths are nephroliths (found in the kidney), and most of the affected patients are small-breed males. CaOx uroliths are radiopaque and most are easily seen on radiographs (X-rays).

In addition to breed and sex, risk factors for CaOx stones include being overweight, under-exercised, neutered, and eating a dry food diet, which contributes to more concentrated urine. Small dogs are thought to be more susceptible because they drink less water relative to their size than large dogs do.

One risk factor is insufficient or abnormal nephrocalcin, a strongly acidic glycoprotein present in normal urine that inhibits calcium oxalate crystal growth. Dogs who produce normal and sufficient nephrocalcin have a reduced risk of developing calcium oxalate stones.

Certain prescription drugs contribute to the formation of CaOx uroliths. Prednisone and other cortisone-type medications prescribed for inflammatory illnesses such as arthritis, itchy skin, or inflammatory bowel disease, can contribute to the formation of CaOx stones. So can the diuretic drug furosemide (brand names Lasix or Salix), which is given to dogs with congestive heart failure. Thiazide-class diuretics are recommended in place of furosemide for dogs who are prone to forming CaOx stones. Some nutritional supplements, such as vitamins C and D, are believed to contribute to oxalate stone formation.

Uroliths can develop in any breed, but the greatest number of calcium oxalate stones presented for analysis have come from Miniature Schnauzers, Bichon Frises, Standard Schnauzers, Lhasa Apsos, Shih Tzus, Yorkshire Terriers, Miniature Poodles, Pomeranians, Parson Russell Terriers, Papillons, Keeshonds, Samoyeds, Chihuahuas, Cairn Terriers, Maltese, Toy Poodles, West Highland White Terriers, Dachshunds, and mixed breeds.

Cocker Spaniels, German Shepherds, Golden Retrievers, and Labrador Retrievers are believed to be at decreased risk of CaOx stones.

Conventional veterinary practitioners tend to consider calcium oxalate stones irreversible, unaffected by diet or medical therapy, and untreatable except by surgery. They may attempt to remove small bladder stones by flushing the bladder with sterile saline, or perform shock wave or laser lithotripsy (processes that break stones into small pieces that can be flushed out or excreted in the dog’s urine).

Uroliths pose a more serious problem for male dogs than females, because their urine travels through a hollow bone (os penis) that surrounds the urethra within the penis. The bone cannot stretch or expand to accommodate a stone traveling through it, and obstructions readily result.

For males with recurring stones, a surgical procedure called urethrostomy sends urine on a new path, avoiding the os penis. The urethrostomy creates a new urinary opening in the scrotum area. This type of surgery cannot be performed unless the dog is neutered; if he is intact, he can be neutered at the time of the urethrostomy.

In up to 60 percent of conventionally treated patients, calcium oxalate stones recur within three years. In dogs with Cushing’s Disease (hyperadrenocorticism) or excessive calcium in the blood (hypercalcemia), both of which predispose dogs to CaOx stones, the recurrence rate is faster. It’s important to treat these underlying causes, if found, to help prevent recurrence. The recurrence rate among Bichons is higher than for any other breed.

Calcium oxalate crystals are of concern, but their presence doesn’t necessarily mean your dog is at risk of forming stones. Crystals are significant only if found in fresh urine. Crystals that form when urine is refrigerated or analyzed more than 30 minutes after collection may be incidental and not indicative of a problem. Dogs with calcium oxalate crystals in fresh urine should be monitored, and if the finding continues, steps should be taken to reduce the risk of stone formation, particularly in breeds most commonly affected.

Death sentence to discovery
In 1997, Molly McMouse, a 14-year-old Lhasa Apso belonging to Leslie Bean of Houston, Texas, was diagnosed with very dense, inoperable calcium oxalate stones affecting both kidneys. Bean owned three more Lhasas – 15-year-old FuzzerBear, 13-year-old Peepers, and 11-year-old CB Wigglesworth – who were closely related to Molly. Fearful that her other dogs could be afflicted by the same condition, Bean had them tested, and was shattered when each received the same diagnosis.

Kidney Stones in Canine

 

“My husband and I were told that oxalates only proliferate in size and number,” she recalls, “and that as the calcification of their kidneys increased, all four of our dogs would die, probably within six to nine months.”

At the time, Bean was founding director of patient advocacy at the University of Texas MD Anderson Cancer Center, a position that helped her contact medical experts of every description. She checked with veterinarians, veterinary researchers, and directors of veterinary schools and laboratories around the country, only to receive the same sad news from all.

“Every one of them said these stones cannot be dissolved,” she says. “They all felt bad about it, but they agreed that the prognosis for my dogs was hopeless.”

Bean’s Lhasas had been on a premium, holistic food, but after their diagnoses, at the recommendation of their veterinarians, Bean put them on a low-protein, low-phosphorus, low-sodium prescription diet. The dogs disliked the new food and their to-the-floor show coats rapidly dulled.

At that point, Bean says, “I accepted the fact that my dogs were going to die but I wanted to make their final months as terrific as possible.” Tossing the prescription food, she began feeding fresh foods such as lamb and peas, chicken and rice, and beef and broccoli. “I figured if they had so little time, they were damned well going to enjoy what they ate,” she says, “and they loved it. I can still see them dancing with joy when I carried their bowls to their places. Literally within two weeks they began acting more energetic, looked younger, had a spring in their step, and their eyes were clearer. Their coats looked better, too, and we soon had to cut almost an inch in length from each dog every month. Although that is common in young Lhasas in show coat, the rate of growth slows with age, so this was a really noticeable difference.” Because oxalic acid forms strong mineral bonds that can become calcium oxalate crystals and eventually CaOx stones, Bean speculated that low-oxalate foods might help prevent the stones’ formation (see “Oxalates in food,” page 9), and she made those ingredients the foundation of her dogs’ menus.

Protein
In the past, diets restricted in both protein and phosphorus were thought to reduce the risk of calcium oxalate formation. Studies found, however, that dietary phosphorus restriction increased calcium absorption and the risk of calcium oxalate formation, while higher levels of dietary protein reduced the risk of uroliths. Current recommendations for dogs prone to forming CaOx stones say that diets should not be restricted in protein, calcium, or phosphorus.

In February 2002, The American Journal of Veterinary Research published a study conducted at the University of Minnesota College of Veterinary Medicine’s Minnesota Urolith Center that compared dietary factors in canned food with the formation of calcium oxalate uroliths in dogs, with surprising results. Canned diets with the highest amount of carbohydrate were associated with an increased risk of CaOx urolith formation. Contrary to commonly accepted beliefs, the study concluded that “canned diets formulated to contain high amounts of protein, fat, calcium, phosphorus, magnesium, sodium, potassium, chloride, and moisture and a low amount of carbohydrate may minimize the risk of CaOx urolith formation in dogs.”

In contrast, Hill’s Canine u/d, often prescribed for dogs prone to forming CaOx stones, is low in protein, calcium, phosphorus, magnesium, and potassium.

At the beginning of her nutritional experiment, Bean reduced her dogs’ protein levels so much that they began to lose muscle mass. “After much research, analysis, and discussion with my veterinarians,” she says, “I increased their protein levels to 33-40 percent of the total volume of food. They quickly regained their lost weight and muscle, and there were no further problems with muscle loss.”

As Bean discovered, it’s very important not to reduce protein too much. Even the most severely phosphorus-restricted diets for renal failure recommend feeding a minimum of 1 gram of protein per pound of body weight daily.

Recheck
As the Lhasas continued to thrive, their primary veterinarian, Jane Milan, encouraged Bean to return them for another ultrasound test to the veterinarian, a specialist in internal medicine, who had first diagnosed them. “I just didn’t want to hear bad news,” says Bean, “so I kept putting it off.”

Eight months after their diet change and past or near their predicted death dates, she made the appointment. “I was really nervous,” she says. “They looked terrific, but I had no way of knowing what was going on inside them. And the vet was with them for an unusually long time, which made me even more anxious.” Finally the somber-looking veterinarian returned to the waiting room carrying two of the dogs and said, “I don’t know how to tell you this.”

Bean assumed that her other two dogs had died during their ultrasound tests and she nearly fainted, but the vet’s good news revived her. The calcium oxalate stones that had been ticking time bombs were nowhere to be found. That’s what caused the long delay – he could not at first believe his test results. “The two older dogs still had five tiny stones,” she says, “but they had shrunk to the size of pin-dots, and they soon disappeared.”

Despite the kidney damage already caused by their calcium oxalates, each of the already senior Lhasas lived several more years. FuzzerBear died at age 19, the other three lived to be 18, and frequent check-ups showed all four to be completely free from calcium oxalate stones for the rest of their lives.

At the suggestion of their veterinarians, Bean continued to study canine nutrition and assembled a set of guidelines that described her dogs’ regimen.

“I am not a veterinarian licensed to practice veterinary medicine in any state and make no claims or representations as such,” Bean reminds everyone. “I am simply a pet owner whose dogs suffered from intractable problems. I developed FuzzerFood, named for Fuzzerbear, based upon the independent research I conducted to help my own dogs. My discoveries are not intended to be veterinary advice, nor are they a drug, biologic, or other therapeutic or diagnostic substance or technique designed to replace a consultation with a qualified veterinarian.”

She recommends that owners of dogs with calcium oxalate stones work closely with their veterinarians, beginning with a baseline ultrasound, complete blood panel, and urinalysis. “Start now if you have not already,” she suggests, “to maintain records of blood work and urinalysis reports as well as your own notes as you go.”

Water, the key ingredient
The most important thing you can do for a stone-prone dog is increase fluid consumption and opportunities to urinate. Urine becomes concentrated when insufficient fluids are consumed or when dogs are not able to relieve themselves and have to hold their urine for long periods. And concentrated urine contributes to supersaturation with minerals that can precipitate into crystals and lead to stones.

One way to encourage dogs to increase their water consumption is to add salt to their food, but salt is controversial when it comes to calcium oxalate uroliths. Increasing dietary salt encourages the kidneys to excrete more calcium, raising urinary calcium levels.

One might predict that increased sodium would therefore lead to increased calcium oxalate formation, but that isn’t necessarily true. In a 2003 study, dogs were fed dry diets containing varying amounts of sodium. The diets that contained 300 mg sodium (about ⅛ teaspoon of salt) per 100 calories significantly reduced urinary calcium oxalate supersaturation over diets containing 60 mg or even 200 mg sodium per 100 calories. Increased fluid consumption resulting from the thirst generated by additional salt probably offset the increase in calcium excretion. A human retrospective study published in 2009 concluded, “Increasing urine sodium does not appear to increase the risk of calcium oxalate nephrolithiasis (kidney stones).”

Bean, however, does not add salt to food. The majority of human studies indicate that adding salt is inadvisable, and many who elected to apply the FuzzerFood regimen for their own dogs were unsuccessful in attempts to dissolve or prevent recurrence of calcium oxalate stones when they departed from the guidelines Bean developed for her own dogs.

You can help your dog drink more by providing fresh water in clean dishes in several locations; changing the water frequently; adding small amounts of tuna water, salt-free or low-sodium broth, a favorite juice, or other flavoring agent to drinking water in addition to offering plain water; adding water to food; offering ice cubes as treats; using a pet water fountain to provide continuously filtered fresh running water; offering water at every opportunity; and carrying water and a portable bowl while hiking or traveling.

What type of water should you use? Bean prefers steam-distilled water because it contains no minerals that might combine with excess oxalic acid. Physicians she consulted with told her that both hard and soft water may increase the risk of calcium oxalate formation. Reverse-osmosis water filters remove 95 percent of minerals, making RO-filtered water nutritionally similar to distilled water.

Not all minerals in water contribute to kidney or bladder stones. In several studies conducted in the 1990s, human patients who formed calcium oxalate nephroliths drank a French mineral water containing high levels of calcium (202 parts per million) and magnesium (36 ppm). Nearly every risk factor for calcium oxalate nephroliths improved significantly. The same patients also drank local tap water and mineral water with low calcium/magnesium concentrations, neither of which improved the measured risk factors. The researchers concluded, “The risk of calcium oxalate stone formation can be significantly reduced by consumption of mineral water which is rich in calcium and magnesium.”

Other research on the effects of hard and soft water on urolith formation has shown mixed results regarding risk, possibly due to variations in mineral content and ratios, along with factors such as whether the water was given with or between meals. For this reason, distilled water may be safest, particularly for dogs with kidney stones or recurrent bladder stones.

Getting extra water into your dog is only part of the urolith-prevention strategy. Just as important is the frequent release of urine. Give your dog many opportunities to go outside during the day. If your dog is indoors alone or crated for hours each day, find a way to create a convenient elimination area using plastic, newspapers, towels, a patch of sod, or whatever you can devise to keep your dog from having to hold her urine for long periods.

Urinary pH
Calcium oxalate stones form in urine that is acidic, typically measuring between 5.0 and 6.5 on the pH scale. Calcium oxalate crystals are generally not sensitive to urinary pH, but marked acidification that induces metabolic acidosis can promote calcium oxalate stone formation due to increased urinary calcium concentration.

A common recommendation for dogs prone to forming calcium oxalate stones is to alkalize the body with foods or medications to bring the urinary pH closer to 7, which is neutral. Alkalizing the urine will not cause existing stones to dissolve but may help prevent new stones from forming. It’s important not to try to alkalize the urine too much, as this can lead to the formation of calcium phosphate stones.

You can monitor your dog’s urine by holding a pH test strip in the stream or by collecting urine in a paper cup or clean dish for testing.

But don’t be surprised if your dog’s urinary pH stays where it is. Leslie Bean describes her careful monitoring of her dogs’ urinary pH as a source of discouragement. “I thought that unless I could bring their pH higher, their stones would increase,” she says. “To the contrary, not only did they not increase, the stones dissolved. I learned that the key is to monitor the pH and know where you are, but not to panic if the urine stubbornly remains more acidic than you would like.”

Oxalates in food
Oxalic acid is found in both plants and animals, with plants containing higher levels. It forms strong bonds with sodium, potassium, magnesium, and calcium, creating oxalate salts. The term “oxalate” usually refers to a salt of oxalic acid, one of which is calcium oxalate. Sodium and potassium oxalate salts are water-soluble, but calcium oxalate is not, and it is what forms CaOx uroliths.

Interest in low-oxalate diets has increased recently because of possible links between oxalates and human kidney stones, arthritis, fibromyalgia, female vulvar pain, autism and other pervasive developmental disorders, and chronic inflammation. As a result, there is growing demand for accurate data on the oxalate content of foods. When Bean began her research 13 years ago, much of the information published about this subject was quite old. Eventually she found a small booklet published by the University of California at San Diego, “Oxalate Content of Select Foods,” which featured more current data and gave her a list of foods to include and avoid.

Today, the Oxalosis and Hyperoxaluria Foundation publishes an up-to-date list of foods and their oxalate content. Based on research from 2008 and revised as new figures become available, this report divides foods into very high, high, medium, and low levels of oxalates according to serving size. The foods in Group 1 (very high-oxalate foods) are best avoided by dogs prone to calcium oxalate stones. Group 2 (high-oxalate) foods should also be avoided.

Group 3 foods have moderate oxalate levels. They can be fed in moderate amounts as long as calcium is also given with the meal. Group 4 (low-oxalate foods) are “green light” ingredients, and can be fed in any quantity, though they should still be combined with calcium. See the complete list, available through the Oxalosis and Hyperoxaluria Foundation, for information about additional foods, including herbs, spices, combination foods, and beverages.

Some websites and publications incorrectly list meat, liver, other organ meats, shellfish, cheese, yogurt, broccoli, sardines, cherries, brussels sprouts, olives, and strawberries as dangerous for CaOx-sensitive dogs, based on outdated information. All of those foods are actually low in oxalates.

Designing the menu
Because it’s difficult to find commercial foods made without ingredients that are problematic for dogs prone to CaOx stones, home-prepared diets may produce the best results. For those who already feed a home-prepared diet to their dogs, the adjustments are simple. For those who are new to dog food preparation, designing an effective menu need not be complicated. Your dog’s food can be prepared along with your own meals or made in advance and refrigerated or frozen in single portions for later use.

Start by feeding different types of meat, poultry, eggs, fish, and dairy in order to provide a variety of flavors and nutrients. The food Bean feeds her dogs is about 40 percent protein by volume, but higher protein levels work well for many dogs. The rest of the diet should be low-oxalate grains and/or vegetables.

While Bean doesn’t include organ meats in her FuzzerFood guidelines, adding ½ ounce (about 1 tablespoon) of liver per pound of other foods will add valuable nutrients to a home-prepared diet.

Meat can be ground, cut into cubes, or served in a single piece, assuming your dog doesn’t have problems chewing. It can be fed raw or cooked. Because CaOx dogs on raw bone-based diets have continued to form stones, the FuzzerFood regimen does not include bones. Freeze-dried liver and similar dog treats are appropriate for training and special occasions. Avoid treats that contain high-oxalate ingredients, and factor treats into the daily food allotment of overweight dogs.

Bladder Stones in Canine

 

Boiling vegetables in water greatly reduces their oxalate content, while steaming reduces levels slightly. Of course, boiling reduces nutritional content, so it’s a trade-off. When you feed Group 3 (moderate-oxalate) vegetables, consider giving smaller amounts raw and larger amounts cooked. Adding digestive enzymes to food at serving time helps replace enzymes destroyed by heat.

Most 10-pound dogs need less than 1 cup of food by volume, while dogs weighing 50 pounds may need closer to 3 cups per day. Bean’s Lhasas maintain their 12- to 14-pound body weight on slightly more than 1 cup per day. The amount to feed will vary according to your dog’s activity level and the amount of low-calorie vegetables in the diet. Because key supplements should be given twice a day with food, consider feeding breakfast and dinner rather than one meal per day.

Calcium
In the past, calcium was thought to be a risk factor for the formation of calcium oxalate stones. Later studies found, however, that calcium binds oxalate and thus actually reduces the risk of calcium oxalate stones when given with meals.

When she spoke with urologists who deal with human kidney stones, Bean learned that supplementing homemade food with calcium citrate neutralizes oxalates in urine, so she began giving it to her dogs with meals while avoiding all other mineral supplements. “Citrate is an important natural inhibitor of calcium oxalate stones,” she says. “When calcium citrate is combined with food at mealtime, it helps absorb and bind excess oxalic acid in the gut. This bound oxalate cannot be absorbed and is excreted through the feces. This means that it does not get into the bloodstream or kidneys to cause stones.”

Pure calcium citrate powder is inexpensive and easy to use. Bean adds 300 to 350 mg of NOW brand Vegetarian Powdered Calcium Citrate to each 8 ounces (½ pound) of fresh food to balance the diet’s calcium:phosphorus ratio. Calcium citrate should only be added to homemade diets, or to the fresh portion of a combined diet, as commercial diets should already contain the right amount of calcium (though, unfortunately, they rarely use calcium citrate).

Supplements
For more than 40 years, the medical literature has reported on the success of a simple nutritional therapy for the prevention of calcium oxalate stones in humans using magnesium and vitamin B6. In studies published in The American Journal of Clinical Nutrition, The Journal of the American College of Nutrition, and other medical journals since 1967, patients with longstanding, recurrent calcium oxalate kidney stones received 200, 300, or 500 mg magnesium oxide with or without 10 mg pyridoxine (vitamin B6) daily for five years or more, during which their stone formation fell by more than 90 percent. When measured, their urine increased its ability to keep calcium oxalate in solution.

Because vitamin B6 deficiencies can contribute to an increase in oxalate production, many veterinarians prescribe this vitamin for dogs prone to CaOx stones. Severe vitamin B6 deficiencies may result from genetic disorders. Vitamin B6 is available as an oral supplement or by injection. Follow label directions or, if using a human product, give ¼ of the total dose for each 25 pounds of body weight.

A B-complex supplement provides all of the needed B-family vitamins. Give 50 mg twice per day to dogs weighing 50 pounds or more, and one-fourth or half that amount to smaller dogs. The FuzzerFood regimen includes Omega-3 fish or salmon oil, a B-complex vitamin, and vitamin E, with optional CoQ10, magnesium, glucosamine, digestive enzymes, and probiotics.

Magnesium can have a laxative effect, so begin at the low end of the range, which is 3 to 5 mg per pound of body weight per day, divided into morning and evening doses and given with meals. Magnesium supplementation is contraindicated for dogs in renal failure, so if that is your dog’s condition, use this under your veterinarian’s supervision only as long as there are stones, then discontinue.

Bean does not use either vitamin C or vitamin D (including cod liver oil, which contains vitamin D) because vitamin C is reported to convert to oxalate, thus possibly increasing the risk of stone formation, and vitamin D promotes calcium absorption, which leads to increased urinary calcium.Most multi-vitamins contain vitamins C and D, so it’s important to read labels.

Supplements manufactured for human consumption come in a wider variety than do veterinary supplements, making it easier to find human products that avoid these ingredients. Adjust the recommended human dose for your dog by weight.

Some researchers have found that glucosamine supplements, which are commonly used for arthritis, may help prevent calcium oxalate crystals from adhering to the bladder wall. While this treatment is still speculative, glucosamine is safe to give and may be helpful in preventing CaOx bladder stone formation.

When Bean asked Traditional Chinese Medicine veterinarian Cory Stiles, DVM, for advice from that perspective, Dr. Stiles recommended Lysimachia-3, a traditional Chinese blend of three herbs, Jin Qian Cao or Desmodium, Hai Jin Sha or Lygodium Spores, and Ji Nei Jin or Gallus, which is designed to treat human digestive disorders, gall stones, and kidney stones.

“Lysimachia-3 comes in tablets,” says Bean, “which we crushed and mixed with food, or the tablet can be placed in a small amount of low-fat cream cheese, or the dog can simply be ‘pilled’ by putting it down the throat. My dogs had no objection to having these tablets crushed and mixed with their food, and Lhasas are notoriously picky.” Dr. Stiles’ recommended dose is 1 tablet per 25 pounds body weight given twice daily until stones are dissolved. Then give Lysimachia-3 daily for another month, then start using it every other day, then every three days, and if all looks good, dose it three times per week every other week, and finally, daily for one week out of every four to six weeks.

Preventive medical treatment
Potassium citrate is a nutritional supplement that increases citrate levels in the urine, attracting calcium away from oxalates. When calcium binds to citrate, the resulting calcium citrate tends to remain dissolved instead of precipitating out as a mineral deposit. Potassium citrate also has an alkalizing effect on the urine, which can help to prevent the formation of calcium oxalate stones, though it won’t dissolve existing stones. High blood potassium levels are dangerous, so a veterinarian’s supervision and follow-up blood tests are recommended when using potassium citrate. This supplement should usually not be given when dietary changes alone maintain the urine’s pH at 6.5 or above.

Calcium citrate achieves the same goals of alkalizing urine and binding oxalates without the risk of elevated potassium that can be posed by potassium citrate. That’s why Bean considers calcium citrate a better option for her dogs’ homemade diets.

Dogs who continue to form stones despite other steps to minimize risk may be prescribed hydrochlorothiazide, a thiazide diuretic, to increase the amount of urine produced while reducing urinary calcium oxalate saturation.

The stress connection
In addition to good food and ample water, dogs need a stable home life, active exercise, and interesting activities. Some researchers speculate that stress plays a role in the development of kidney and bladder stones. When changing your dog’s diet, do what you can to keep the introduction of new foods fun and stress-free. Fortunately, most dogs love fresh food. Just as importantly, do what you can to relax and let go of the stress that concern about your dog’s health brings to your own life. The more you and your best friend enjoy each other’s company with play, exercise, and shared quiet moments, the better you’ll both feel.

Next month: The final installment of our bladder/kidney stone series examines cystine, calcium phosphate, silica, and ammonium urate or uric acid uroliths.

CJ Puotinen is the author of The Encyclopedia of Natural Pet Care and other holistic health books. She lives in Montana, and is a frequent contributor to WDJ.

San Francisco Bay Area resident Mary Straus has spent more than a decade investigating and writing about canine health and nutrition topics for her website, DogAware.com.

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