actually he is a feral tomcat and he was terrorizing the nice little [abandoned, stray] kitty for which we've been caring. Is there such a thing as Mad-cat Disease? Symptoms include hanging upside down with claws protruding and teeth gnashing. He made a little trip to the feline reeducation camp. I haven't seen him come up for adoption yet; maybe they could make a video of him like a shelter did for Pinky.
But I think Pinky was actually nicer than this tatty.