Lately my cat has been pulling my hair from the scalp of my head with his teeth and it really hurts. He's always had his weird habits but I can't understand why he is doing this new one. I love my cat but even the vets can't seem to understand why he does some of the things he does. Like when he's mad or he wants something his eyes will go all black with a small green ring on the outside and he will growl and jump on me and bite and scratch. Or he won't let me out of the house unless I give him pounce treats before I go. He will literally play dead in front of the door and I can't move him. And if I close one of my doors he freaks out because he can't see me. I grew up around dogs so I'm not quite sure if this is normal or not so if anyone can help me I would be forever grateful! Thanks!