The last 3 times my 2 cats were in the same room they literally almost killed each other. I've never had this issue before, it's heartbreaking really. It is also tricky and a Royal pain in the arse keeping them apart 24/7 Last time there was fur flying, poop, pee and vomit. Oh, a bit of blood too. I wouldn't believe it had I not seen it myself and had a witness. Nightmare. The clean up was fun, took an hour to calm the one down. She almost hyperventilated it appeared 😬🙄