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Canine Behavior/Will my dog attack puppies


My dad's dog Sandie had puppies on October 3, 2012. When she had that litter my dad let me keep one, I chose a male and named him Bruno. When Bruno was 6 months old me and my dad took him to the vet to get his rabies shot and to be neutered. About a month and a half ago Sandie got out of her pen and is pregnant again. When these new puppies arrive we are going to keep them indoors until they can walk by themselves, after that we are planning to put them in the same pen as Bruno and Sandie are in now, it is a very large pen and it is outdoors. Bruno hasn't met but two dogs in his life, the one was a chow mix and he lives on the same property that our dog live on, Bruno didn't have any problem with him at all. The other dog looked to be a pitbull, Bruno met this dog at the vet the day he was neutered, and Bruno freaked out and wouldn't stop howling until that dog left the room, but he didn't want to fight this dog he was just terrified. My question is, would it be Ok if we left Bruno in the pen with the puppies when they can walk, or should we separate Bruno into another place?

Thank you for your question.

For the health and safety of the puppies, they ought not be living outdoors until they're at least 10 weeks old. And at that point, they need to have proper shelter available that is out of the elements and climate controlled. Puppies and young dogs are not able to regulate their body temperature as well as adult dogs. So they are more sensitive to extreme heat and extreme cold/wet. So, even once they're outside, they need to have shelter that is off the ground, out of the sun and maintained at a controlled temperature that is neither above 85 degrees nor below 60 degrees. And, of course, they will need to have plenty of fresh water available at all times.

As to whether or not they should be housed with Bruno, it's hard for me to say without having observed his behavior with other dogs, and specifically puppies. You said that he gets on with another dog on the property, but seemed frightened by a new dog he met in a high-stress environment (the vet's office). From this it's really impossible for me to know if Bruno is comfortable with dogs or not.

More importantly, just because a dog is comfortable with other adult dogs doesn't mean he will be comfortable with puppies. Many dogs are very dog-friendly but rather put out or even intimidated by puppies. Puppies don't smell like dogs yet as they've not yet gone through puberty which means they've not yet had the hormone surges that make them smell "right" to other dogs. Further, puppies are filled with unending energy and don't read canine body language/etiquette very well. Puppies are pushy, invade the personal space of others, torment others in their efforts to try to play, often ignoring the warnings given by others to back off. They move quickly and sporadically, they have loud, piercing barks and will often vocalize for no discernible reason. This can all be agitating for adult dogs if they're not socialized to puppies.

I would not leave any puppy alone with an adult dog until I've supervised several interactions and see clear tolerance from the adult - repeated back-off signals that are done gently and consistently without escalating (e.g. warning growls or air snaps that never go further into actual contact or bullying). I also want to see that the puppies are heeding these warnings without tormenting the older dog or needing the human to intervene.

Some dogs really love puppies and that's a beautiful thing to watch. They are so patient and tolerant and are really gentle when correcting puppies. They allow the puppies to get away with harder bites during play or nagging for attention and never get overly angry. As the puppies grow up, the adult dog slowly gets firmer with the corrections and a bit less tolerant - as the puppies are figuring out what those signals mean. That dog will demonstrate a great trustworthiness around the pups. But not all dogs are this tolerant nor interested in parenting puppies.

It would be entirely unfair to Bruno to put him in a pen with a bunch of puppies (even a single puppy) if he's not truly comfortable with puppies. It would also be entirely unfair to put Bruno out of his regular living space to accommodate the puppies. Your best solution here is to create a second enclosure for the puppies.

If this were happening at my home, I would have several supervised interactions between Bruno and the puppies to see how Bruno feels about them. I'd start by introducing him to just the calmest puppy in the group. I'd be on hand to separate them if he starts to bully the puppy or if the puppy is nagging Bruno and Bruno isn't enjoying it. If a couple visits with this puppy goes well, then I'd introduce him to the next calmest puppy and so on until he's met each on individually. Then I'd introduce him to the two calmest puppies together, then the next two, etc. And if all is going well, then I'd introduce 3 at a time, etc, until he's got the whole litter there. Each new puppy in the space changes the dynamic tremendously and while he may be OK with one or two puppies, he may be entirely overwhelmed by 3 or more. Our goal is to make sure Bruno is comfortable with this.

I'd also plan to have two separate enclosures near each other. This may be side-by-side where they can sniff and lick at each other through the fencing, or it may be several feet apart or it may have an opaque barrier so they can't see each other - depending on how comfortable Bruno appears to be with them. I would NOT allow unsupervised time with the puppies until they are 6 months old, and they and Bruno have all demonstrated that they get along and heed each other's behavioral signals.

I would also get the mama spayed so that there are no more oops litters. There are already an overwhelming number of dogs and puppies in shelters (~4 million put to sleep each year for lack of homes) desperately looking for their forever home. I don't want to be responsible for one of those loveable and homeless dogs being euthanized because I allowed my female to make babies. Especially when she's proven that during her fertile time, she is an escape artist and will do anything to get with a guy... I'm sorry if this bit is rather blunt, but sometimes being straight is better than sugar-coating.

I do hope this proves helpful to you. Please feel free to followup if I can be of further assistance.

Jody, APDT
Los Angeles Behaviorist

Canine Behavior

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Jody Epstein, MS, CPDT-KA


IF YOU BELIEVE YOUR DOG IS ILL OR INJURED, PLEASE CONTACT YOUR LOCAL VETERINARIAN IMMEDIATELY. THIS IS NOT THE FORUM TO ADDRESS URGENT MEDICAL ISSUES. I AM NOT A LICENSED VET AND HAVE NO DIAGNOSTIC SKILLS. ***I have been answering questions on All Experts for over 8 years now. I enjoy being able to offer assistance in this forum. I do need to be clear, though. If you’re looking for free advice about a specific behavior question, you MUST submit your question to me via All Experts. If you bypass All Experts and write to me directly through my website, I will ask you to submit via All Experts. On the flip side, if you’re local to Los Angeles and you wish to speak to me privately about an in person consultation, please go through my website. I appreciate your assistance in keeping my volunteer work on the volunteer site.*** I can answer questions about the following canine behavior issues: obedience, timid/fearful & fear-based aggression, nuisance behaviors, families that are expanding with either new human or new animal members and many other issues. If you have potty training questions please first read my trio of blogs at If you still have questions after reading the blogs you can post your specific questions here. PLEASE be as specific as possible when asking a question. Give me a detailed example of the situation - dog's behavior, body language, circumstances surrounding the issue, what the consequences are (another dog's response, your response), etc. I can only provide insight if I can get a picture of the whole scenario. If I ask for further details, please provide them. In person I would normally observe for at least 90 minutes to assess the situation and the dynamics before offering tools and suggestions to modify it. In writing it is ever so much more difficult. Thank you for your participation in the process.


I have been a professional obedience trainer for 9 years, and specializing in behavior modification for 8 years. I have owned dogs my entire life. I own my own dog training and behavior modification business called Nutz About Mutz.

I am a Certified Profession Dog Trainer - Knowledge Assessed (CPDT-KA), #2133301 ; I am a member in good standing with the Association of Professional Dog Trainers (APDT), #77763 ; I am an AKC certified Canine Good Citizen evaluator (CGC), #71253

Publications ; ; Multiple articles in the local pet magazine Pet Press (found across Southern California)

I have a masters degree (MS) in Animals and Public Policy, with a minor in Animal Behavior, from Tufts Cummings School of Veterinary Medicine. I also have 3 years of graduate education in Animal Behavior and Learning from UM-Missoula and UL-Lafayette. I continue to educate myself to canine-specific behavior through extensive reading, online interactive workshops, vidoes and attending canine behavior conferences, workshops and seminars. Beginning in March, 2017, I will be the Behavior & Training Manager at Second Chance Center for Animals in Flagstaff, AZ.

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