The Dozer has been through two basic training classes. He knows the basics, but will not respond unless there is a treat involved. During classes, or with a treat in hand, he is a smart dog, and he does what he is told without a problem. However, if he happens to grab something he isn't to have, he's on the run. Unless bribed, give it, leave it, drop it are not in his vocabulary. Neither is sit, stay, come, lay down, look at me, or anything else he learned in class. So he knows them, but he won't respond. Any suggestions?