I just inherited my brother's cat, who was an only pet. He is a 2-year-old male, neutered cream Siamese. I have 3 older, female cats. He wants to attack them all. I have tried baby gates to introduce them, but he still wants to fight, I mean really fight. Please help, he is otherwise a very snuggle puss, love bug. I am not sure what to do about this cat behavior problems.