This is an accomplishment! They can deal with one another enough to take naps on the same couch now. I think the kitty has more or less been fine since day one, but Porter still doesn't trust him and won't open up. They play differently. Porter's playing is pretty much chasing and that's about it. Nero's way of playing is biting your throat, hugging you with all 4 legs and beating you with the rear leg rabbit punches & hopping out of hidden places and whacking him in the face and running or climbing something.