Jen,

I've had biters too, but only love bites and nothing serious. Sometimes when cats are petted, they get what you call "over stimulated". Usually you can tell when they are going to bite by their body language. Their ears will go flat and their pupils will dilate. There's a cat at the shelter called Lane who has gotten a bad rap for biting. He only likes his head petted. And if you do it too much, he will bite. That's why he's been there a long time. I've tried working with him and I think it has something to do with him being abused in her former home.

Anyway, what I did was yell "NO!!!" very loud and walk away from the cat. Eventually my cats got the idea. Haven't had a problem since.

Another thing you can do is get a can and put a couple of pennies in it. Everytime he bites, shake the can. It's a great training tool that my boss has used on his cat and Jack Russell.

Good luck.