[YORKIE_mom_2008]

You are going to need to assert yourself as the leader the same way you would one of your labs. If he does something minor (not listening, barking) I would suggest a quick, firm poke around his hips accompanied by whatever noise/sound you use to scold him. If he gets severly agressive (charging, snapping etc) then you are going to pin him down into the submissive postion (flat on his side) and keep him there until he stops struggling. He gets up when you say he can up. That is the end of it. No more scolding, grudges nothing. Then move on. It most likely won't happen overnight but keep at it! And PLEASE keep me posted!