My cat hisses and attacks new cats. How do I introduce them safely?

Question

I have a cat, Kaji, that is showing signs of aggression towards our new cat, Topsy. She hisses, growls, and flicks her tail. If I let her get close to him she would attack him. I know this because we’ve tried to introduce her to a cat before and the same thing happened. How do I get my cat (Kaji, female) accept our new cat (Topsy, male) into the family? They are both fixed and have all their shots. Pet's info: Cat | Domestic Shorthair | Female | spayed | 13 lbs

Dr. Davis · Accepted Answer

I would try a Feliway spray, diffuser or collar. It is a pheromone that helps with relaxation and anxiety. There are also supplements for anxiety. Set up separate areas for feeding and two litter boxes so they each have their own space with an area that they both have access to. Usually over time they will adjust if left alone. If she’s still aggressive there are prescription medications to give her for a little while to help her adjust so please discuss this with your veterinarian. Thanks for using Petco Pet Education Center, formerly Petcoach to help you care for Kaji.

My cat hisses and attacks new cats. How do I introduce them safely?

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