My daughter started biting when she had got bit at the church nursery. Then she'd bite the little girl my mil was babysitting. I think their was some jelousy there, but anyway I tryed everything, time out, talking to her no no hurt, ect. I kept being told to bite her just hard enough to get her attention and she'll quit. I wouldn't do it but the again she is biting other people. Well one day she bit her dad and he bit her back and she was heart broken crying like it was the end of the world. She never bit again. I still don't like the idea and I don't know really why that put her to a stop because its not like she had never been biten maybe it was because it was someone important to her and she saw how bad her own feelings were hurt, but girl you know I didn't talk to her dad for a week.