Why does my 3 year old bite and how can I make him stop? I have tried everything I can think of from time out, spanking, biting back, taking away toys, and I even reward him on the days he does not bite his friends at school....Nothing works. He has been biting since he was 1 then he stops for awhile and starts it all over again. He even bites my 17 year old to the point where my oldest looks abused. I am at the end of my rope, and I imagine the parents of the children he is biting are tired of it. What can I say to these parents that my child keeps biting their child. PLEASE