I have a 9mnth old who I had the same problem with when he was younger and made this same post. We couldn't even pet him without him wanting to chew on our hands/arms. Somehow I knew I had to teach him teeth n humans= not ok. Someone from this forum advised me when his teeth had contact with human at all to hold the bottom jaw folding over his bottom lip onto his teeth pressing a little firmly without hurting and using the command "no bite". I tried it made sure I never hurt him or made him cry, and he stopped after a couple days n haven't had the problem since. With a 2yr old son in the house as well biting will not be tolerated. He now has the softest, most gentle mouth and you can give him anything from your hand and never feel a single tooth, and he's got big ones lol.