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Why is my dog aggressive to my new third dog, unlike before?

Updated On September 23rd, 2025

Pet's info: Dog | Maltese | Male | neutered | 3 years old

I just bought a 3rd dog last night and my current dog skipper is showing aggressive behavior towards him. He didn't do it with my 2nd dog though.

1 Answer

Most Helpful Answer

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Answered By Rebecca, DVM

Veterinarian

Published on June 7th, 2017

There are some articles here that may be worth reading. http://www.veterinarypartner.com/Content.plx?P=SRC&S=1&SourceID=47 Every new dog is a new pack member with thier owne personality. A new dog is challenging your other dogs place and potentially taking resources (food, toys, attention). You need to slowly make introductions and not leave the dogs alone unsupervised until they have reached a stable peace. http://www.veterinarypartner.com/Content.plx?P=A&A=2465&S=1&SourceID=47

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