my cats suddenly hate each other

by Jackie Baker
(Charleston, WV)

I have 2 six year old spayed litter mate cats that suddenly a couple of months ago started fighting. I came home from work and the little one (Shiloh) had her ears back, eyes dialated, and growling like a mountain lion. I was actually afraid of her. She and her larger sister (Tigger) were not getting along! Shiloh would chase Tigger down the stairs to the living room, hissing and growling. This lasted a couple of weeks. Now, for the last 6 weeks they are at it again. They have their front claws and I am afraid that they could hurt each other. Shiloh will not come out of the spare bedroom upstairs. She sees Tigger and she starts growling. I did put up baby gates (one on top of the other) but I need to get into that room everyday. I took down the baby gate. I have litter box, food and water both down stairs for Tigger and upstairs for Shiloh. Sometimes Tigger sneaks into the room and I hear eight feet clawing the wooden floor! Shiloh only gets off the bed or out from under the bed when I come into the room. She eats when I am sitting at the computer but looking around for Tigger who is in the hallway wanting to come in. Today I noticed that Shiloh had gone to the potty on the bed (which has her favorite blanket on it). I don't know what to do. They are totally inside cats and I must admit they have not been to the vet. Can you help? I am about ready to take them both to the no-kill shelter.

Thank You.

Hi This sounds to me like something called aggression truama. It is a common problem when something frightens the cats and they blame the fear on the other cat even if it had nothing to do with them.


You need to help the cats find their confidence in each other again in a safe environment. Now this procedure does take a little time and effort but is worth it in the end.

the process is described here

Don't worry about the cats hurting each other, most of what you see and hear is all show and cats don't like to risk serious injury.

best wishes kate

Comments for my cats suddenly hate each other

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Cats fighting
by: Anonymous

1 cat is 5 year old and 1 more is 3 both are Male and they are happily buddies from 3 years we got out neighbors cat home and which hissed at both, then they took him back but out both cats are hissing at each other the small 1 is very smal so we are really scared and we miss the way the big 1 being protective about him and now he is only fighting and threatening him. Please please help me to make them get along and yeah I have heard few cats never get along but if they were friends bfr is there stil chances for them to not to get along at all

7yo male and 8yo female cats fighting
by: Bobby

Hello! For about the last month or longer my cats have been trying to kill each other. They were fine for 7 years and all of a sudden they just won't stop fighting. It gets so bad when they are tangled up we can't even get it broken up. We have been keeping them separated but it seems to just be making it worse. Any suggestions?

Has anything changed? Was there a visit to the vets for one of them? Has a new cat arrived in the area? There are so many possible reasons why your cats are reacting like this.

Please look through my site there are many pages which can help.

Thank You
by: Anonymous

Thanks alot this is really helpful, my cats started doing this yesterday so will try your advice and see what happens but at least i understand now why my one hates the other one all of a sudden.

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