I'm sure this is normal, but just to make sure. My little kitten Bonkers has gotten into the habit of coming up on the bed in the mornings around 4:30 and wanting a fuss, which I don't mind at all. But if, for some reason, I stop petting him and he hasn't gotten all the mommy love he needs, he will not really bite my hand, but its more like nibble on it. He has tried biting but never breaks the skin, but he is getting aggressive....what should I do?