I too started out saying no very sternly every time, but I could tell my son no till I was blue in the face he didn't get it. When I bit back and showed him the pain he was causing it never happened again. I didn't bite hard enough to draw blood, I consider that cruel, but the shock on his face told me he finally understood the result of his actions. He was older when this happened, but I've seen it work on more then one child. They bite because they're mad, don't have the language to express that, and don't realize their biting causes pain. Showing them the pain helps that comprehension, and often times ends the behavior.
at 1:01 AM on Feb. 9, 2011