So I just got a new kitty, it's a boy and his name is Marcus. We adopted him from the shelter.
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But we still have Mizzie,
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who has been around another cat before (we had a male cat named Andy before we got Mizzie and he was put down less than a year ago because he was sick) but she's being mean. I realize that she's territorial and it's going to take a while. Marcus and Mizzie have already been introduced and gotten into two fights (we locked him in a room because Mizzie was getting really mad and she usually rules the roost so it wouldn't be fair to lock her up)

I was just wondering if anyone has any tips for getting them more friendly with each other? I know it could take some time but anything will help really thanks.