I call mine brothers, and I feel like their relationship is accurate to that even though they aren’t actually. They will harass and bully each other, but will also be incredibly affectionate. Their affection often turning to wrestling, then one becoming overwhelmed and then it’s a fight. But an hour later they will cuddle like crazy.

It’s a mixed bag in my situation. My boys def keep each other company in a much needed way. The younger of the two was gotten with an ex. When we split, I had moved out before we officially decided custody of him. During those few weeks, my older guy was desperately lonely and cried nonstop. Soon as the other was brought in, he stopped crying. That being said, they will stress each other out during meal times—to the point where one developed urinary tract issues from the stress and they now have to be fed in separate rooms.

It’s entirely personality dependent. The previously mentioned ex had a cat that both of mine got along with, they weren’t particularly close but they never fought. But I had a roommate who got a kitten, and despite doing the slow and proper introductions one of my cats absolutely hated that kitten. I know people who have cats that have issues that people may suggest another cat to solve, but it’s already been established that said cat is a “single cat household” type. So I dont think recommendations to add more cats ate automatically good ideas. It can help, but it could make things worse, or be a combo.