Back when I had three; Ming, Mac, and Kimba, a good day was when there was no fur flying and they would actually tolerate each other. Ming and Mac did not fight very often at all, but I wouldn't have called them chummy. Neither of them got along with Kimba at all, there were always fights with hissing and paw swipes. Now that Ming and Mac have passed, it's kinda peaceful with just one kitty. Kitties do not always do well with other kitties, unfortunately.