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My old dog is aggressive and bites my new puppy. How do I stop it?

Updated On September 23rd, 2025

We've had a new puppy about two weeks. My 11 yr old dog is very aggressive and bites at her. Should I be worried that this will only continue? How do I stop it?

1 Answer

Most Helpful Answer

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Answered By Andrea M. Brodie, DVM

Veterinarian

Published on March 21st, 2018

Ypur puppy is probably very lively and wants to play with your old dog. Your old dog probably does not feel like playing and does not want to bother with the youngster, so the only way to deal with a wild youngster (for him) is to tell the little on in no uncertain terms, that he wants to be left alone. So I would keep the puppy very busy, give it lots of play and exercise, so it is tired afterwards and does not need or want to entice the old dog to play. Make sure that you do not leave the puppy alone with the older dog, as there is a serious possibility of the old dog getting fed up and biting the little one. Best keep them separated. Your old dog will probably calm down and ignore the young one as soon as the young one stops pestering it for play and attention.

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