The Canine Predatory Behavior
Few people want their dogs to act on their inherited predatory drives.
by Pat Miller
Tiffany approached me shortly before the start of her weekly training class recently, clearly distraught. “Newton did something very bad this week,” she said.
My heart skipped a beat as I glanced down at Newton, the black and white Border Collie/Basset mix sitting calmly by her side. In my dog trainer brain, “very bad” usually equates with serious aggression to humans. Newton and his vivacious, committed owner are two of my favorite clients, and I didn’t want to hear that Newton had done something irredeemable.
“What did he do?” I asked.
“He chased and killed a bunny in my backyard!” Tiffany wailed. “My roommates and I were so upset. He dropped it immediately when I told him to, but it was too late, the bunny was dead!”
I breathed a silent sigh of relief, and reassured her that while I understood her distress, Newton’s behavior was natural and normal. Bassets were bred to chase rabbits, after all, and Border Collies were bred to chase things that move. More often than not when our dogs chase small beings like squirrels and rabbits, the little critters manage to escape. This poor bunny wasn’t so lucky, and Newton just did what dogs do.
Predatory behavior: Aggression, or not?
Our dogs’ predatory instincts are one of the things that makes them fun to play with. When you throw a ball or a stick and he chases it, you are triggering his natural predatory desire to chase things that move. In fact, some behaviorists argue that predatory behavior should not be called aggression at all – that it is more appropriately interpreted as a form of food-getting behavior.
Indeed, the motivation to chase prey objects is vastly different from other forms of aggression, which are based on competition for resources and/or self-protection. It is distinguished from other forms of aggression by a marked absence of “affective arousal” (anger), and is a social survival behavior, not a social conflict behavior. Predatory behavior is indicated by distinct behaviors: hunting (sniffing, tracking, searching, scanning, or waiting for prey); stalking; the attack sequence (chase, pounce/catch, shaking kill, choking kill); and post-kill consuming. The underlying motivation for chasing things that move is to eat them.
Dogs who challenge, bark, snarl, and chase skateboarders or joggers who pass the house are generally believed to be engaging in territorial aggression – individual predators don’t usually openly advertise their intent by making lots of noise (although anyone who has ever followed a pack of baying hounds knows that group hunting can be quite noisy!). Dogs who hide in ditches or behind bushes and silently launch their attack on unsuspecting passers-by are exhibiting more classic predator behavior. However, the frustration of restraint on a chain or behind a fence combined with constant exposure to the trigger of rapidly moving prey objects can push a dog from predatory behavior to real aggression. Both behaviors, of course, are dangerous.
Just because predatory behavior is natural doesn’t mean that it’s acceptable in its inappropriate manifestations. It was not acceptable to Tiffany and her roommates for Newton to chase and kill a bunny, and it certainly wasn’t acceptable to the rabbit. Predatory behavior has been responsible for the death of many unfortunate pet cats, rabbits, chickens, sheep, goats, and other livestock, and even humans. (See sidebar: “What About the Baby?!”) While it often can be expressed in harmless, even useful outlets such as games of fetch, retrieving ducks, and herding sheep, chase behavior can be dangerous to dog and prey alike. It is our responsibility, as caretakers for our canine companions, to be sure their natural predatory instincts don’t get them into trouble.
Manage, manage, manage
As with so many other undesirable dog behaviors, if your dog has a strong prey drive, your first line of defense is management. Make sure you have a secure fence from which your dog cannot escape. Don’t leave him in the yard unattended if he will be constantly tantalized by lots of fast-moving prey objects, such as squirrels, deer, skateboarders, small children running and playing.
Use leashes and long lines to prevent your dog from taking off after deer, rabbits, and squirrels when you are on walks and hikes. Especially keep him on leash at dawn and dusk, when the deer and the antelope – and other small, wild things – are most likely to play. Look for ways to minimize his visual and physical access to prey in his own yard – a solid fence will prevent him from seeing things moving quickly by, and will prevent many potential prey animals (including small children) from entering easily. A non-visible underground electronic fence will not. Nor will a non-visible fence necessarily prevent him from leaving the yard if he is highly motivated to chase prey. (See “Simply Shocking,” WDJ February 2003.)
A muzzle can also be useful on a limited basis. Since muzzles restrict a dog’s ability to drink water and pant normally, you cannot leave one on your dog while you are away all day at work. But if he’s devastating the squirrel population in your backyard, or you want to give a litter of baby bunnies a chance to grow up and get wiser and faster, you can put a muzzle on him for brief fresh air/potty trips to the yard. Be sure to take time to desensitize him to wearing a muzzle first, by associating it with yummy treats while you put it on him for gradually longer periods of time. (See “Much Ado About Muzzles,” WDJ November 2000.)
You will never train most herding dogs not to chase things that move, given the chance. Similarly, you’d be hard pressed to convince many terriers not to go after rats and other small creatures when the opportunity arises. Their brains are hardwired to chase, and you can’t change that.
A slightly less imposing goal is to change the predatory response into an incompatible behavior response. For example, you could teach your Border Collie that the appearance of a deer is the cue to lie down. She can’t “down” and “chase the deer” at the same time. Or, as we taught our own Scottie, the appearance of your kitten could be the cue for your dog to sit at your feet. This type of training can be difficult because the dogs are so highly motivated to chase – it is quite a challenge to convince them that they’d rather do something else. You must find something highly rewarding in order to make it work. For our Scottie, it was food. For a Border Collie, it might be the opportunity to chase a tennis ball – after she lies down – instead of the deer.
This approach works best in your presence, and only if you practice it regularly rather than just expecting it to work in the heat of the moment. Although we are quite comfortable leaving our now-grown kitten alone with Dubhy, it was several months and several pounds worth of kitten-growth before we stopped shutting her in her own room when we weren’t there to supervise. You might not ever be able to expect that your Border Collie will leave the deer (or the skateboarders) alone if she is outside, unrestrained, and left to her own devices.
A solid foundation of good manners training can also be helpful, combined with vigilance on your part. If you are out hiking with Bess and see the deer before she does, you can call her to you and snap the leash on. Even if she sees it first, a really reliable recall will bring her back to your side, especially if you call her pre-launch, before she is headed hell-bent-for-leather after the fleeing deer.
A well-trained emergency “Down!” can also save the day, even if your dog is in full stride. Many dogs will “Down!” even when they won’t “Come!” because they can still watch the prey. Stopping the charge gives the dog’s arousal level and adrenaline time to recede, and you may be able to call her back from the “down” or calmly walk up to her and snap her leash on her collar.
Dangers of thwarting
Dogs who have strong, hardwired behaviors are usually happiest if they are allowed to engage in those behaviors in some form. Greyhounds chase mechanical rabbits on the track – and while we abhor the abuse that is rampant in the Greyhound industry, there is no question that the dogs love to run and chase. Jack Russell Terriers are in heaven when they get to play in Earthdog trials. Our Australian Kelpie, Katie, gets a huge charge out of running circles around our horses in the pasture, even though they are impervious to her attempts to direct their movement.
In fact, if hardwired behaviors are constantly thwarted (prevented from occurring), you risk having your dog develop compulsive disorders. A canine compulsive disorder (CCD) is a normal coping behavior that becomes exaggerated to the degree that it is harmful to the dog. Some common examples are excessive licking, spinning, and tail-chasing. Some dogs are genetically predisposed to CCD, but it usually takes an environmental trigger – stress – to cause the behavior to erupt. The breeds known to have a high prey drive (see sidebar, “It’s in the Genes”) are often the most susceptible to developing stereotypical spinning behavior when kept in high-stress kennel environments. (See “Obsessive/Compulsive Dogs,” WDJ November 2001.)
If you are the owner of a dog with strong predatory inclinations, it behooves you both to find an outlet for the behavior rather than simply trying to shut it off. Encourage your dog to chase and fetch balls, sticks, and toys, and take the time to engage in several fetch sessions with him per day.
Use these strong reinforcers to incorporate training in your play sessions and strengthen your dog’s good manners. If your dog rudely jumps up and tries to grab the Frisbee from your hand, whisk it behind your back until he sits, then bring it out again, and only throw it if he remains sitting until you throw. You are using two of the four principles of operant conditioning here. The dog’s behavior – jumping up – makes the Frisbee go away, which is “negative punishment” – the dog’s behavior makes a good thing go away. When he sits and stays sitting, you throw the Frisbee. This is “positive reinforcement” – the dog’s behavior makes a good thing happen. Works like a charm.
If you have a Terrier, provide an outlet for his prey-seeking behavior by creating a digging spot – a box filled with soft soil or an area you have dug up where he is allowed to dig. Bury his favorite toys and encourage him to “Find it!” Toys that squeak and wiggle are especially suited to Terrier games.
Come chase with me
One of the most useful applications of chase behavior is in conjunction with teaching your dog to come when called. Lots of dog owners make the mistake of moving toward their dogs – or even chasing after them – when they won’t come. In dog language, a direct frontal approach is assertive, even aggressive, and dogs naturally move away from it.
It’s much more effective to do the exact opposite – run away from your dog! Start playing chase/recall games when your dog is a pup. Get excited, call your pup, and run a short distance away. Let him catch up to you while you are still facing away from him, then turn sideways, kneel down (don’t bend over him), praise him, feed him a treat or play with a tug or fetch toy, and pet him (if he enjoys being petted; not all dogs do). If your dog is no longer a pup, you can still play this game to strengthen his response to the Come! cue.
Teach your dog from early on that “Come!” means “Chase me and play,” keep up the games as he matures, manage him so he doesn’t get to practice inappropriate predatory behavior, and find acceptable outlets for his natural chase behaviors. Using these tactics, you’ll have a much better chance of getting those incompatible behaviors later on when you are faced with the challenge of competition from real prey.
Pat Miller, WDJ’s Training Editor, is also a freelance author and Certified Pet Dog Trainer in Chattanooga, Tennessee. She is the president of the Board of Directors of the Association of Pet Dog Trainers, and published her first book, The Power of Positive Dog Training, in 2002. See "Resources" for contact information.