I have to agree with the others. I have a 17 month old who has been biting for a few months and I talked to the parents. This little girl has bitten 2 of the other dckids so I had to really stress the importance that it stops NOW. The little girl was doing it now and then at home too so the Mom decided one day when she did it to bit her back. Sounds horrible, I know, but this little girl was leaving teethprints in other people that could be made into a mould for dental work, it was that deep, but didn't break skin. Left horrible bruising for days though. Her Mom didn't bite her half that hard, just hard enough for her to realize that it hurt! I think it worked, she hasn't bitten anybody for 2 weeks, so far so good.

My point is that this little girl isn't even 1 1/2 yet and the parents took me seriously and helped right away.