Any suggestions on how to curb this? It is the first thing he does when he comes up to me, and once he is comfortable with another person, he starts mouthing them. 14 weeks old now. I have read different things, like putting a toy in his mouth, screaming really loud to indicate it hurts, holding the muzzle shut and say "No !". Nothing is working, and it is getting worse. I don't really think it is an aggressive thing, just playing and showing affection. Please let me know what to do !!! Thanks !!!