I have that same problem with my dog Ziggy. She is 2 and she will always jump on you and after she does that I always have scratches all over my arm and she likes to put my hand in her mouth. I know she don't understand , but she snaps down sometimes and it hurts. I been thinking about taking her to a obedience class, but she doesn't like any other dogs. We have to keep her away from our other dogs. I go out there everyday with her hoping that she will get out of that stage. I love Ziggy though. She is my buddy! I know what your going through... Good Luck with it.

How much are obedience classes? usually?