Help! My 8 week old puppy mouths everyones hands all day long. He has his mouth wide open and looks like he is gonna bite whenever he is playing or being pet,.plus he attacks your ankles and pantlegs with his mouth as well. I dont know what to do!! I tell him NO firmly and move my hand away. He may stop for a moment but just continues to do it the next time your hand is there (or not there, sometimes he seems to go after hands). He doesnt bite them but he mouths your hands ALWAYS nomatter what you are doing with him. I dont know why he does this or how to break him of it. Anyone out there able to help?!?!?