answer:I don’t have advice, only sympathy. My Rudy (female) hates cats. When she was a kitten, there were 3 older female cats in the home, but she quickly asserted her dominance. We moved when she was 6, and she was happily alone for a few months. We tried to adopt an 8-week-old female and Rudy almost ripped out her jugular. Fortunately, my friend took the kitten back and she was adopted with her sister/littermate. A year later, another friend found a stray kitten near her job. No one claimed him, so we took him home – hoping that because he was male and a bit bigger, Rudy wouldn’t maul him. It’s been 2+ years now, and he’s bigger than her, so he’s become the aggressive one – because that’s what he learned from her. We keep them separated overnight, so we can get some sleep. They will both get on the bed with us now, as we lounge in the mornings, but it is an uneasy truce. They hiss and spit at each other throughout the day, but I don’t worry that they’ll seriously hurt each other, and there are squirt bottles around when discipline is needed. I’ve made it clear that despite all their posturing, I am the Alpha Kat.