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Why is my female dog aggressive towards my male dog after neutering?

Updated On September 23rd, 2025

Pet's info: Dog | Yorkshire Terrier | Male | neutered | 5 years and 6 months old

Hi, my bitch yorkie has started to attack mu dog yorkie. He has been neutered recently. Could this have triggered these attaks? Thanks Alan

1 Answer

Most Helpful Answer

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Answered By Mirissa Duncil, DVM

Veterinarian

Published on July 21st, 2017

Hi there. Actually, yes! To reasons not always know to us-changes in the hormonal makeup of our animals (i.e. a recent neuter) can make them smell different. Many theories have been postulated as to why previously accepting partners will turn away the new "smell" and show aggression. Many think it is frustration in the change. Some think it is because they now want to show dominance. Often, we do not ever really know for sure. Normally with time the pair will acclimate again, but I usually recommend supervised playtime until then. I hope this helps!

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