That's interesting, Ayo has been doing a lot of that kind of nipping again lately, he used to do ti a lot as a small puppy, but had pretty much stopped. Now he is 10 months old and he is nipping again.He does it when he is excited, when playing around, and also whine he wants something, like for example when we are walking and he wants a treat, he will nip my leg,, or when he doesn't want to go back home sometimes. at first I thought it was kind of funny but I realize I can't allow this to continue , also it gets really annoying real soon, cause you know it kind of hurts!! So….. All this advice is really helpful. one if the problems Ive had is trying to get other people to understand not to come up to him all excited and yelling, HELLO,, OHH HOW CUTE, HOW ARE YOU etcetc... Because it gets him all worked up.