When Penny was a puppy, she was a big biter! Whenever she felt bitey, I usually did 2 things. First when she would bite me, I would make a loud “yelp” noise that would demonstrate to her that what she did hurt me. Instinctively, puppies play bite with each other and when they hear that “yelp” noise, they immediately think that they are hurting the other puppy and will stop biting. Secondly, when she starts to bite or chew on my hand, I would quickly give her a chew toy. With this method, you’re trying to redirect her attention onto something that is appropriate to chew on.

I hope that helps! Plus, here’s a helpful site that has a lot of info on puppies that bite and nip: http://www.dog-obedience-training-review.com/how-to-stop-a-puppy-from-biting.html