I can relate to a cat biting when you are in bed. I used to have a real problem with Lucas when he was about 10 weeks old. He would crawl under the covers and attack my belly. This of course was because I have a navel piercing. He would just go nuts and chew on the barbell and lick my stomach. Banning him from under the covers did the trick.
As for Cujo, maybe you need to accompany his bites with a firm no and point. My cats always understand when I use that tone of voice and point at them. Maybe displacing him from your lap to let him know that it is unacceptable behaviour might work. I'm really not sure.
As for Cujo, maybe you need to accompany his bites with a firm no and point. My cats always understand when I use that tone of voice and point at them. Maybe displacing him from your lap to let him know that it is unacceptable behaviour might work. I'm really not sure.