I posted about the (failed) PetSmart training class (http://www.dogforum.com/dog-training/obedience-lessons-concerns-feedback-2788/page3/#post27080), but one thing I wanted to get separate feedback on was the fact that Cannon bit (lightly, no skin broken, and more of a hard nip than a bite) me and my partner several times when we were holding him back from the other dog and not distracting him well enough. It seemed more of a "I can't get to what I want so I'm going to be aggressive right here" than him realizing he was biting us. The other biting thread (http://www.dogforum.com/dog-training/dog-agression-issues-need-advice-2850/#post27106) got me worried, though. Does this sound like something I can fix with Control Unleashed, where we are slowly getting him desensitized to other dogs, or should I be getting a trainer? He hasn't tried biting either of us before and isn't food aggressive.