Posted By PickyPenny on 01/05/2014 02:12 AM
The family is becoming more annoyed and tired of my boy.
Eve though he seems to be the instigator, there’s absolutely no reason for anyone in your family to get annoyed with him. Two intact males invaded his territory, of course he’s going to defend it. It’s what cats do. If it was the other way around and he had moved into your sister’s place, her cats would act just as aggressively towards him. Probably even more so because he’s alone and they are two.
Anyway, as the others have said, neutering is the only solution, other than keeping them apart. Is your cat down in the basement all the time or just to sleep?
Slightly off topic: I know you said your cat is strictly indoors (thank you by the way, loose neighborhood cats are such a nuisance and one of my worst pet peeves), so it’s not such an issue with him. But why is your sister letting her cats go outside if they are intact? There’s no doubt about the fact that they are knocking up any female they can find and there are enough unwanted cats being put down every day in shelters. Maybe that’s something you can talk to her about. It’s not responsible pet ownership to let your animals procreate like this and add to the pet overpopulation.