Reward and punishment doesn't work with cats? Well, fire them out the door if you think they are that stunned.... BTW, IMO, they are not that stunned. If any animal cannot be trained by a human to be civil it is the fact that one of them is stunned as me arse or mentally incompetent. I have seen both. In either case, it's sad.
I have friends who should never be allowed to own a pet. Mind you, not very good friends. Makes me sad.