gravy_train, I've only ever had one boy in my care (I've had my daycare for way over 10 years) and he was as you described, although he never mouthed anything, just a lot of biting. Even the same age when he started biting. I tried working with the parents (only child but they said he never does this with his cousins). I tried to get him to stop biting for 7 months. Yes 7. Why you ask. Because his parents were Golden. There was not anything wrong with them. They were fantastic and so was J. One day he bit another child and broke the skin. I "had" to terminate that day. What was I thinking trying to work that long with a child who could really do harm. Please don't let this go on to long. He is the only child I have ever terminated. Ever. So I don't take terminating lightly. I believe their is good in everyone. But this one bad thing was the deal breaker after trying for so long. I hope you get some good advice on things to try to get him to stop. In the meantime. Shadow.