Dog Became Aggressive After Having Puppies?

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It can be unsettling to see your dog become aggressive towards people, other dogs, or even her new puppies. This is a page about dog became aggressive after having puppies.


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October 11, 2007

My pitbull terrier has 4 week old pups. She growls at them if they want to nurse and she has shown her teeth to one of them. She has attacked another dog in my home after having the pups. She just is not herself anymore. I am thinking that her aggression will soon cause more damage, I am thinking of having her put down and raising the pups. Is this normal from the mother?

Jae from Germantown, MD


October 11, 20070 found this helpful
Best Answer

This is not as uncommon as you would think. How old is the mother? If this is her first litter and she's young, the stress of dealing with the puppies may be too much. My German Shpeherd did the same thing when I bred her at 2 1/2 years. I hand-raised the puppies and within a few days she was her normal happy-go-lucky self.


Also, be aware that mother dogs teach their puppies to be "easy" as they get older. The new puppy teeth are VERY painful I'm sure! Ask your vet if you are unsure about the behaviour, but don't put her down without exploring ALL the possibilities! She may just not be cut out to be a mother.

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October 13, 20070 found this helpful
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This happened to my Pom after she gave birth and at about the 6 week mark. I was told by my vet that it was the dogs way of weaning the pups and that I should be introducing them to puppy food...I would check with your vet for sure, your dog may be hormonally deficient, she may even have some sort of infection in her would certainly be worth the vet visit.


Good Luck.

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November 9, 2018

My Pittie had puppies 8 weeks ago. She has never snapped at my kids or me for that matter. But she snapped at one of the pups two weeks ago over a toy. No harm done, corrective behavior. But today I went to feed the last two pups and her, the pups were excited and went over to her as she was eating, and she attacked one. Not just corrective, the puppy was bleeding and shaking badly. I don't want to resort to letting her go (putting her down), but I'm scared out of my mind.

Please help, and no bashing please.


November 9, 20181 found this helpful

Aww...poor pup and mom. I would talk to your vet ASAP. Today if possble and separate mom and the babies (NOW) and hand feed them until you can get an answer from the vet. You should be able to buy mom's milk for pups at a high end pet store or the vet.


Sometimes mom knows something is wrong with the pup and tries to euthanize it (prayers that is not the case), sometimes the mom gets (like people, post partum depression). The vet can give you the best input.

Prayers for all. Post back what the vet says.

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November 9, 20181 found this helpful

You need to talk to the vet. She may have a hormone inbalance that is causing her to behave this way.

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November 11, 20180 found this helpful

Yes you should

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November 18, 20180 found this helpful

it would be good to know her history, has she been adopted from an abusive situation? Has she been aggressive towards other dogs?


one problem with Pitts is that they have a tendency to be great with people but terrible towards other dogs; they have been bred to be thus and this generally is made worse by abusive early conditioning

you probably will have to separate them from her, get her spayed, and raise the pups yourself by hand and then rehome them. Or you could rehome her I suppose but her life prospects will be greatly diminished/she will probably end up languishing in a shelter or be put down because nobody wants an aggressive dog

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July 1, 2019

My dog had a litter of pups last year in August. Since then she has been aggressive (barking, running up to people/dogs, and launching at random people). The weird thing I can't understand about it is, it's not towards everyone and it's not constantly.


We kept one of the pups with us and at first I put this down to her protecting the pup. I thought she would grow out of it once she realised she was safe and staying with us, but this wasn't the case. She even does it when the pup isn't with us, so now I am trying a muzzle her to see if this can help calm her down.

Any advice would be great as I really would like to get her back to the way she was before, I was wondering if having her neutered might help?


July 1, 20190 found this helpful

I would consult with the vet. The pregnancy and childbirth may have altered her hormones, just like in humans.

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July 3, 20190 found this helpful

It is not uncommon for female dogs to become more aggressive after having pups. Neutering will help. Talk it over with your Vet because besides neutering there are other things that help too.

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December 19, 20190 found this helpful

My dog is the same way and its been 2 years since she had the pups and she is still aggressive towards people she doesnt know and other dogs

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