Originally Posted by Suzy

Don't separate him.......he will get even more angry. Show equal love to both.
Continue to warn him everytime he is aggressive. After sometime it helps. I had problem when I first let Kitty to the house with Ashley they almost fight everyday......warn kitty she didn't listen......then i just added 3 more cats and they learned to shut their mouth after that......

If they eat at different pace is ok do like what you use to feed but try feeding tuna on a same plate.......a plate big enough to be shared by both. Play ribbons with them so they will learn to play together....if they still don't listen just go and get a new cat at to the list.......... (If not borrow from a fren and keep in the house and see how they behave)

Originally Posted by bina

I remember, once I sent one of my cats to the vet overnight and when she returned, the other cat (sister) was hissing at her..... and even tried to "paw" slap her....

It was the same the next morning, so what I did was, I took "the other cat" and bath her.... dried her a little and then put her back in the same cage with her sis cat (who just got back from the vet).

And... guess what? The became close again, both started to lick one another and talah..... they are back to friendly terms again.

It might have something to do with cat scent. Maybe you can try bathing the aggresive one? (but becareful not to get yourself hurt!)