I am getting him neutered, I figured that would help. Then I talked to a trainer at petsmart who said that one on one sessions would do well for him. then I could be trained on how to train him and I would know what to do and that stuff. But I have been doing the NILIF thing and it seems to be making some slow progress. The worst thing he does is when you run he chases and jumps up and bites. this probably wouldn't be a problem if he wasn't 70lbs! So I have been running him, like I'll put him on a leash and make him run beside me. it seems to work for me but only me. if anyone else runs he chases and bites. I don't understand. It is not aggressive biting he is only playing but in reality he is way too big to play like that. not to mention the fact that playing or not, he still has big teeth!! and children don't know not to run ya know? I know that he isn't "problem dog" but he has issues that I need to resolve thanks guys