Problems Associated With Adopting Two Puppies at the Same Time

Why experts warn against adopting two puppies at the same time - and what you can do for your dogs if you did not heed the warning.

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ADOPTING DOGS TWO-AT-A-TIME: OVERVIEW

1. Think long and hard about getting two puppies at the same time. Make sure you’ll be able to give both dogs everything they need.

2. If you do get two puppies, make a firm commitment to spend social time and training time with them separately, to avoid having them super-bond with each other.

3. Consider instead adopting one puppy now and another later, or better yet, one puppy now and an adult dog later.


There’s no denying it: a new puppy is one of the world’s most wonderful things. It’s a cold, hard heart that doesn’t get all mushy over puppy breath, soft pink puppy pads, and the fun of helping a baby dog discover his new world. So, if one puppy is wonderful, two puppies must be twice as wonderful, right? Well, not usually.

Most training professionals strongly recommend against adopting two pups at the same time. The biggest challenge of adopting puppy pairs is their tendency to bond very closely with each other, often to the exclusion of a meaningful relationship with their humans. They can become inseparable. Also, owners often underestimate the time commitment required to properly care for and train two puppies; as a result the pups often end up untrained and undersocialized.

adopting two puppies at once

Don’t Get Two Puppies at Once!

I’m the last person on earth to argue against getting a second dog, or even a third; my husband and I have five. However, there are very good reasons to think long and hard about not getting two puppies at once, whether they are siblings or not.

While the majority of new puppy owners seem to recognize that one puppy is enough of a responsibility for them, a certain number fall prey to one of a few common arguments about why two puppies might be better than one. I can rebut every one of them!

Let’s take a look at the most common reasons that people say they want to adopt two puppies at the same time – and why they shouldn’t be considered.

Two-pup rationale #1: “I want to get two puppies so they will have someone to play with while I’m gone all day at work.”

It’s a good thing to recognize that your pup could use companionship during the day. However, if you think one puppy can get into trouble when you’re not there, just think what kinds of mischief two pups can cook up when left to their own devices. Better solutions might include:

• Adopt your new pup at a time when someone in your family can take a week (or several) off work to stay home and help the puppy adjust gradually to being left alone. A couple of weeks vacation time? Kids home for the summer? Just be sure to use the time wisely, so your pup can learn to happily accept being alone when it’s time to go back to work or school.

• Find a friend, neighbor, or relative who is home much of the time and who is willing to provide daycare for your pup – and experience the joys of having a puppy to play with during the day, without the long-term responsibilities and costs of having a dog for 15-plus years.

• Ask your vet if she has another client with a similar-age puppy, and see if the two of you can mingle your pups at one of your puppy-proofed homes for puppy daycare, and send the second baby dog back home after work. Note the emphasis on “puppy-proofed.” Two pups can still get into a heap of trouble, even if one of them isn’t yours.

Two-pup rationale #2: “I have two children and they each want their own puppy.”

What a sweet idea. Just say no. Since when do the kids get to make the rules? Seriously, most families I know have enough trouble getting their kids to fulfill their promise to feed, walk, and clean up after one family dog. Mom ends up doing most of it anyway. So now Mom gets to do double-puppy-duty? If there’s a compelling reason for them each to have a dog, consider adopting one puppy now, and an adult dog from a shelter or rescue group. Even then, I’d adopt one first and give her at least a month to settle in, if not longer, before adopting the second.

If you must adopt two puppies at the same time for the kids, see the second half of this article.

Two-pup rationale #3: “We want to have two dogs eventually anyway, so we might as well get them at the same time so they can grow up together as best friends.”

Well, that’s what you might well get! When you raise two puppies together they usually do grow up to be inseparable best friends, often to the detriment of the dog-human relationship. Inevitably they spend far more time together than they do individually with you, with a likely result that they become very tightly bonded to each other and you are only secondary in their lives. Many owners of adopted-at-the-same-time puppies ultimately find themselves disappointed in their relationships with their dogs, even when they are committed to keeping them for life.

This super-bonding also causes tremendous stress (and stress-related behavior problems) on those occasions when the dogs do have to be separated – and sooner or later, something will come up that requires them to be separated: one goes to training class and the other doesn’t, you want to walk one but not both, or a health-related problem requires one to be hospitalized or otherwise kept separate.

adopting two dogs at once

Two-pup rationale #4: “A second puppy will play with the first and keep her occupied when I’m too busy to spend time with her.”

Nice thought, but here’s a heads-up. If you’re too busy to give one puppy the time she needs, you’re definitely too busy for two puppies!

There are great interactive dog toys on the market that can help occupy your pup when you can’t play with her – and don’t think that either another puppy or a pen full of toys can substitute for social time with you. Puppies do take time, and it’s important you give that some serious thought before adding a baby dog to the family. It’s fine to give her playmate-time via arranged play dates with a friend’s healthy and compatible puppy, but don’t think adopting a second pup is an acceptable substitute for your own interaction with your puppy.

Two-pup rationale #5: “If we adopt a second puppy, that’s one fewer that might be euthanized.”

I won’t argue with this, except to say that in many shelters around the country today, puppies aren’t the problem. Of course there are exceptions, but I’d say the majority of shelters in the United States now have no problems placing most if not all the puppies they get. It’s the adult dogs who are most likely to die because of homelessness. If you really want to save a life, adopt a grown-up dog instead of a puppy, or at least adopt your puppy now, and come back for an adult dog in a few months.

Two-pup rationale #6: “The breeder we are buying our puppy from thinks it’s best if we take two.”

If you’re buying from a breeder who encourages you to purchase two puppies at once, run away fast. A truly responsible breeder will, in most cases, refuse to sell two puppies to one home, except on the rare occasion that a prospective buyer can prove she has the skill, knowledge, time, ability, and monetary resources to provide an excellent environment for two pups at once. Someone who tries to push two puppies on a buyer isn’t a very responsible breeder, and isn’t doing her puppies, or the new owner, any favors.

What to Do If You Adopt Two

Perhaps you’ve already adopted two puppies and are ruefully regretting your error. Or maybe you don’t regret it, but you realize you’ve taken on far more of a responsibility than you realized. Perhaps you’re determined to go ahead and do it anyway, despite my advice above. If you do take the bait and find yourself in double trouble, there are things you can do to minimize problems and maximize your success as the owner of a puppy pair:

1. Crate them separately. Your pups are going to have plenty of together time; they don’t need to sleep together too. You can certainly leave them together in their puppy-proofed space when you’re gone all day, but they should be crated separately at night. You can crate them near each other, but this is the perfect time to start habituating them to not always being in close contact with their sibling. (See “Crating Woes,” Whole Dog Journal May 2005.) When they are comfortable in their crates close to each other, you can gradually increase distance between crates until they can be crated out of sight of each other, perhaps even in another room.

You can also do the “separate crating” thing cold turkey. If your children are old enough to be responsible for taking their pups out in the middle of the night, start from day one with a pup crated in each kid’s room.

In any case, the puppies’ separate crates should be in someone’s bedroom. This is vitally important so someone hears them when they wake at night and have to go out. The pups also benefit from the eight hours of close contact with you, even though you’re all sleeping. And by the way, you can bet if one puppy wakes up to go out, the other puppy in her nearby crate will wake up, too.

2. Train them separately. Your training programs will be much more successful if you take the time to work with your pups individually. If you are using clicker training (and I hope you are!), you’ll probably find that it’s confusing and difficult to try to click and reward one pup for doing a desired behavior when the other pup is doing an unwanted behavior. When this happens, both pups think they got clicked, which means you’re reinforcing the unwanted behavior as well as the desired one. Oops! Not to mention that it’s much more difficult to get and keep any semblance of attention from either puppy if the other is present as a distraction.

adopting two puppies at once

Training time is a perfect opportunity to give your pups a positive association with being separated. One gets to play (train) with you and get attention, clicks, and yummy treats, while the other gets to hang out in her crate in another room, preferably far enough away she can’t hear you clicking, and empty her deliciously stuffed Kong.

If there’s a second trainer in your family, that person can work with the second pup in another room at the same time. Eventually you can each work with them at the same time in the same room, and sometime in the future one person can have fun working with them both at the same time. But that’s down the road somewhere, after they’ve both learned their good manners lessons very well.

3. Play with them separately. It’s common in puppy pairs for one pup to be more assertive than the other, and take the lead in puppy activities. It’s fine to play with them together some of the time, and it’s also important to play with them separately, so the more assertive pup doesn’t always get to make the rules for the other.

For example, if you always play “fetch” with the two together, you’re likely to see that one pup repeatedly gets the toy and brings it back, while the other runs happily along behind. If you watch closely, you may even see the more assertive one do a little body language warning if the other tries to get the toy – a hard stare and stiffened body, perhaps. The less assertive one defers to her sibling by letting go of the toy and looking away. That’s a fine and normal puppy interaction, but it can suppress the “softer” pup’s retrieving behavior. Unless you make the effort to give her positive reinforcement for fetching toys when you play with her alone, you might find it difficult to get her to retrieve later on in her training.

4. Walk and socialize them separately. Just as with your training sessions, you’ll need to walk one pup while leaving the other behind with something wonderful, or while someone else walks the other one in the opposite direction around the block. Walking them together with different handlers doesn’t work; the less confident pup will come to rely on the presence of the more confident one to be brave in the real world. Then, when the more confident one isn’t there, the shyer pup is more likely to be fearful. All the activities you would normally do with one pup, you need to do with each pup individually.

Signing up for puppy training class? Set aside two nights, not one, and take them to separate classes. Going to the groomer? It’s two trips, not one. Time for that next set of puppy shots? Make two appointments, not one. Oh okay, I’ll give you a break – it doesn’t have to be every time, but they should go somewhere by themselves at least as often as they go together.

So, are you getting the idea of the “separate but equal” program? Everything you would do with one puppy you need to do with each puppy separately. This is to be sure they’re both getting the attention, training, and socialization experiences they need, without the interference of the other pup, and so they’re not dependent on the presence of other pup. Of course you can also do things with them together, but you must be sure they are completely relaxed and comfortable about being apart.

For super-bonded dogs, separation becomes a world-class crisis, fraught with life-threatening behaviors such as anorexia (refusal to eat in the other’s absence), separation anxiety (barking, destructive behavior, relentless pacing, and howling), and other stress-related behaviors, including aggression.

Inevitably, at some time in their lives super-bonded dogs will have to be separated. One will get sick, or need surgery, when the other doesn’t. Most of the time, one will die before the other. I know of cases where the surviving dog of a super-bonded pair has had to be euthanized after the partner died, as he was too stressed by himself to be able to function. This is not a situation any loving dog owner wants to face.

Other Factors Involved in Adopting Two Puppies

Behavioral considerations are the reason that most trainers recommend against adopting two puppies at once. But there are other reasons that have nothing to do with the dogs’ behavior.

1. Cost. Not surprisingly, it costs twice as much for routine feeding and care for two puppies as it does for one. But don’t forget the catastrophic care costs! If one pup contracts a deadly disease such as parvovirus, you’re on your way to the emergency clinic with two pups, not one. Sure, if one gets injured the other’s not likely to have sympathy injuries, but with two pups the chances of one getting injured in some manner double.

2. Clean up. Let’s not forget puppy pee and poo. One pup produces more than enough waste for any sane human to deal with, and with two pups you naturally double the production.

If that isn’t enough, consider this: You leave your pups in an exercise pen when you’re not home. One pup is likely to learn to eliminate in a corner of the pen reasonably quickly, and will hopefully avoid tromping through it. Two puppies may select two different corners of the pen as designated bathroom spots, which doubles the chances of poop tromping. On top of that, if the two pups get to wrestling, as pups do, there’s a much greater likelihood of them rolling around in poo than there is if one pup is playing by herself.

Picture yourself coming home from a long, hard day at work, tired, looking forward to a little loving puppy cuddling, to find a pair of poo-covered pups in a pen plastered with the stuff from one side to the other. I’m just sayin’. . .

3. Housetraining. Of course, when you’re home, the puppies come out of the pen to be with you. We normally recommend the umbilical cord approach to housetraining: at first keeping your pup on a leash or tether, or with you, under your eagle eye, all the time, and going out to the designated potty spot every hour on the hour.

Now you’re tied to two puppies who want to wrestle with each other under your feet – or one’s tied to you and one to another family member. As the pups mature you lengthen the time between potty breaks and start relaxing supervision, when the pups demonstrate their ability to “hold it.”

Oops! There’s a puddle. Which pup did it? Oh look, there’s a wee puppy pile of poo under the dining room table. Oh no! I see teeth marks on the corner of the antique loveseat! If you have one puppy and you’re having a persistent problem, you clearly know who needs more supervision, or a quick trip to the vet to rule out a possible medical issue. With two pups, you have to increase management and supervision on both of them, and may never know for sure which one is having accidents. Or maybe it’s both!

4. Gender. Some people say if you’re going to have two puppies, get a boy and a girl. Others say get two boys. Some might specifically warn against getting two girls, stating that two female adult dogs in the same family will fight. Others will tell you they’ve had two girl dogs at the same time, no problem.

Here’s my take: Plenty of same-sex puppy pairs get along just fine throughout their lives. Plenty of mixed-sex pairs do the same. There are same sex pairs that end up with conflicts, and there are mixed-sex pairs that end up fighting with each other (despite super-bonding). It does seem to be true (and there are some studies that indicate) that intra-pack conflicts involving two females tend to be more intense than intra-pack issues between two males, or opposite sex pairs. That doesn’t mean there will be conflict if you adopt two girl puppies, only that if there is, it may be more difficult to resolve than differences of opinions between two boys, or a boy and a girl.

Think About It

Is the extra fun of having two puppies at one time worth all the extra time, energy, cost, and headaches? I’m warning you not to do it. I’m recommending you adopt one now, and another in six months to a year, when the first has bonded with you, and at least completed her basic good manners training.

But if you decide to do it anyway, and are ready to do all it takes to make it work, then you have my sincere blessings and best wishes. But please, be honest and realistic about whether you and your other human family members really have the resources and commitment to give both pups what they need to ensure their lifelong loving home with you. Go find your two wonderful puppies and have an absolutely great life with them.

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

18 COMMENTS

  1. I adopted 3 female littermates 11 years ago beforee I knew anything about super bonding or any other reason for not adopting them together. I do separate them at times for walks, vet visits, training and just giving them space. my concern is end of life, and how do I care for them if I lose one, how do I best help the others. one thing to add is we have always had no less than 4 dogs and as many as 6 dogs and we lived in close quarters with 2-3 others. in other words they have always been around multiple other dogs and we have had losses. in their life we have rescued and lost 6 pups and they don’t seem to “grieve” as a pair might. so I was just wondering if you have seen this situation and if I need to do more now to soften the blow of a loss between the three girls and what might that be? any suggestions would be greatly appreciated

  2. What if we figured out this was a huge mistake to get 2 puppies at the same time. I am angry at the so-called reputable breeder for not talking us out of taking 2 puppies home. That being said, is it too late if we decide to part ways with one of the pups. They are 5 months old? Would we be doing more harm then good if we found a new home for one of the pups?

    • I think there’s a common misconception that “good” pet owners keep their pets for life every time. Sometimes, the best thing you can do to stay happy, positive pet owners and to keep your pets happy, content pets is to give them away.

      If you want to be a good pet owner when doing so, make sure to treat every candidate who is interested in your pet like a job applicant. Do they have income? Do they have knowledge of the breed? Do they travel a lot? etc. I think its important to really pin down the issues that make you consider giving the pet away and make sure a new home does not present those same issues otherwise they may regime the pet again and they may end up in a worse condition than you would have wanted.

      There’s always the chance you decide the best option is to keep both. And maybe a trainer can provide solutions to the issues you have. But sometimes the best life you can give a pet is with someone else. The last thing you want is to grow to dislike your pets.

    • I’m in the same situation. Though mine aren’t siblings….. good intentions ect….
      One of my 5 month old puppies is very domineering. Spoils times together. And she was the quiet one when I got her. She’s not quiet anymore. Has to have it all. The other puppy seems to then walk off when the domineering one pushes in.

  3. I have 2 new shicon Male almost 4 months old. Same litter. All of the above issues r real. I have threatened 2 take them back on a daily basis but I think I wld feel worse if I did that. Having 4 adult kids & 3 other dogs that hv passed I know 1st 6 months is hardest just like a new job u hate after 1 month.
    Dont make any changes until at least 6 months u may hopefully be glad u waited.

  4. We took two boy Chihuahuas, even as new puppies one took care of the other. One was the runt and has breathing issues and may be a little slow. One, the runt, refused training but is obedient just does not want to learn the other loves to train for treats. They are really bonded but I think it all worked out for the best . Both socialize well with other people and our Greyhound on the whole it has been good.

  5. I found this article very irritating — While I understand that you want to give as much information as possible so that people can make a knowledgeable decision, I certainly felt like you were scolding me and doing everything but coming right out and bluntly calling me ignorant for getting 2 littler mates and raising – training – loving them together. Two pups are a lot of work, but we are all very happy. Glad that I didn’t listen to the expert’s advise.

    • You certainly are taking this personally. The writer is trying to educate people so they don’t make a potentially disastrous mistake. My husband and I were considering getting two siblings, but someone luckily pointed out the dangers of sibling syndrome. Thanks to this author and others like them, we didn’t make that mistake.

    • I feel this was informative and not trying to scold. In fact writer made a point to say they don’t necessarily want to argue this point of view. “I’m the last person on earth to argue against getting a second dog, or even a third; my husband and I have five.” I find it great that someone can have a view or do something but still be able to provide information to the opposite view.
      Also ignorance is not a bad thing as long as you are open to learning. Take the information or leave it but don’t contradict yourself by saying “I understand that you want to give as much information as possible so that people can make a knowledgeable decision,” and then in the same breath disliking being called out as ignorant.

  6. Excellent article of information. Thanks for providing objective, realistic information. I thought about getting 2 puppies but I will only get 1 now. Excited that i will get to experience getting a new puppy twice!

  7. We adopted two (supposed) female litter mates (husky/shepherd mixes) …foster fails… They are 8 months old now. They love to play with eachother, but I have seen some concerns as stated in this article. They were already bonded at 12 weeks when we started fostering them, so we decided to adopt both. The “beta” female does get anxious when her sister is not in sight. It seems they do rely on each other for social cues when meeting other people and dogs. So I will start doing some of the suggestions to ensure they are properly rounded!

  8. I agree with Linda. I have 2 litter mates, male and female, with no problems at all. I’ve even raised a litter from the female. My Mum tried getting 2 females (not litter mates and not at the same time) and she had terrible trouble. I think the difference is in the human and that I’m a much stronger pack leader than my anxious Mother. I did a lot of training and reading to be a good owner with my dogs and all of us are very strongly bonded as a result. I also found the article irritating and scolding and it didn’t take into account the human influence on the dogs, litter mates or otherwise, or the factor of being a strong pack leader. I do everything once with my dogs, what nonsense about training them separately or taking them to the groomers separately! There is no need to if you do things properly.

  9. I adopted 2 Great Danes who are currently going on 5 months old. I didn’t know about littermate syndrome or consider some of the other things. Obviously double everything I knew and they are Danes so everything is more expensive. LOL. The only real problem I’m having is that the male will not walk without his sister. We force it anyway. We go in opposite directions, but it isn’t a good experience. We’ve been working with him since the first week of July and he still has to be forced.

  10. We adopted two male moodle brothers at 9 weeks old. We had planned on getting one but the rescue organisation and the foster carer encouraged us to take both brothers and we fell into the trap of thinking they’d keep each other company when we weren’t home. They are lovely together and play all the time. There isn’t an obvious alpha puppy and they’re not aggressive at all and love to get attention from us at the same time, with no signs of jealousy. Our only problem is training. They are not getting the toilet training thing at all. One will often go in the right place, seemingly by coincidence, and we then shower him with praise but the other one will run over wanting praise too when he hasn’t done anything. The other one has recently taken to weeing in their bed and has done it twice in the same evening in front of me. He just has no idea and we’re beginning to think they will be untrainable. The worst part about all of this is that we live in a two bedroom apartment and therefore are unable to separate them much. We also don’t really have the time to dedicate to training them separately. My partners Mum has said she will take one (she lives a 10 min drive away). As heartbreaking as this is as we absolutely love them both so much, we are thinking it may be for the best but we’re wondering if it’s too late now as they’ve been together from birth. We don’t want to cause them any stress but we also want them to be well adjusted and not to develop separation anxiety. Any advice would be much appreciated!

  11. We went to a breeder to meet a female boxer we had reserved. I mistakenly took my son and the breeder showed us a sister puppie that was also available. We did our due diligence and read stories about not getting two puppies from the same litter. I spoke with two dog trainers that I trust and they disagreed with the negative stories, so we went ahead with the purchase. The two dogs are very attached, but they have a great desire for human contact and attention. Boxers love to run , chase, jump and play. It has been a complete joy watching these dogs play with each other and with the family. There have never been fights between the dogs and they get along wonderfully. I think one of the keys to successfully raising dogs together is letting them know at an early age that you are in charge. We are glad we got both dogs, rather than just one.

  12. Thank you for this article. I found it helpful and informative. My husband and I are looking for another pup. We lost our beloved Havanese back in May. We were seriously considering getting two from the same litter, but my gut was telling me it wasn’t a good plan. This blog validated my fear. We will be getting one and will consider a second later. Thanks again!

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