M.H.
I agree with Patricia, my son is almost 20 months old and he had started biting as of recent. He decided to bite my foot when we were all laying down watching a movie and I sat up and bit him back. I talked to him while he was crying and told him that's what it feels like when he bites other people. We had one more incident where I repeated the same thing, and we haven't had any incident of him biting people anymore. He does like to bite the couch though. It has a lot to do with more teeth coming in.