Existing cat is acting extremely aggressively towards our new cat

Hi, we already have two female cats, a 9 and a 3 year old. On Wednesday we picked up a 5 year old male cat, and so far he has been kept in a bedroom with the two females having the run of the rest of the house.
We have tried scent swapping by stoking all three of them with a sock and they have had totally neutral reactions. They've also taken treats from either side of the door with no problems.

We have attempted to introduce the 3 year old to our new cat twice and both times she has gone completely insane. She growls, hisses, and attacks the new cat, me, and anything else in her path. The new cat does not fight back and tries to hide from her.
We tried one more today with the 3 year old cat in a cat box so she could not hurt the new cat but her reaction was exactly the same.

We really don't know what to do next. The 3 year old was spayed last week and we are wondering if this is something to do with her reaction. How can we introduce them without it ending in another fight?

Asked by Member 1185887 on Aug 16th 2013 Tagged newcat, adoption, spayed, aggressive, fighting in Adoption & Rescue
Report this question Get this question's RSS feed Send this question to a friend


  • Cast your vote for which answer you think is best!


Bezalel Tiger

How long has he been in the bedroom? The spayed female might think this cat was why she experienced painful surgery recently- poof and there he is. The introduction was not good timing for her to adjust. You are going to have to give him more space a little at a time with supervised visits. Give her treats if she is behaving. When she flips, pour a glass of water over her head. It will separate the two; do not coddle them and observe, intervening only when necessary. She is more vulnerable right now health-wise, which might be triggering her extra territoriality. Give her a chance to feel better and see what happens. Also, I would introduce him ONLY to the nine-year-old and let them become friends. If that cat can accept him, the other can at least learn to tolerate him without aggression. ^_^

Bezalel Tiger answered on 8/28/13. Helpful? Yes/Helpful: No 0 Report this answer