it's only when we're playing, and its not to bad. he usually he's trying to grab my clothes, which i would love for him to stop. but from time to time he grabs my hand or arm, it just touches the skin a bit, he lets go right away. but it still unpleasant since he has sharp though teeths.
how old? practice "no bite".
Rocky is 8 months and still does while playing.
change the tone of your voice to a serious one, and say NO BITE . often exchanging your leg or fingers for an appropriate toy. some pups take a bit longer to get it, but if they know you aren't playing…..they will get it.