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How to stop male cat aggression after new puppy and house move?

Updated On September 23rd, 2025

Pet's info: Cat | Domestic Shorthair | Male | neutered | 7 months and 13 days old | 7.05 lbs

We have a pair (brother and sister) of cats and we have recently got a puppy. Also moved into a new house. Our male cat has started being rather unkind to the female cat and pup. He wasn’t like this before we moved or got the puppy. He is quite rough when fighting with his sister and has started swiping at the dog too. Is this normal behaviour for a male cat of 8months? Is there anything I can do to help it? The female cat already keeps herself out of the way in a bedroom now.

1 Answer

Most Helpful Answer

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Answered By Dr. Elizabeth

Veterinarian

Published on August 14th, 2019

It's possible Sunny is either stressed or frustrated. Cats will lash out in either of these conditions. This link may help: https://www.petcoach.co/article/how-to-introduce-a-dog-to-a-cat/ At home, there are a few things you can do which may also help. Here is a great article about cat's instinctual needs: https://www.petcoach.co/article/why-every-cat-needs-a-place-to-climb/ Use a Feliway diffuser, set aside 30 minutes a day for vigorous play and/or switch the food to Royal Canin Calm. Most cats response best to combination therapy. The veterinarian can also prescribe medications which can help if needed. I hope this helps and please feel free to post any additional questions.

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