I would just like to say how sorry I am that this happened. I know how scary this must have been. Twice, Zoey has growled at me when I was trying to drag her out of the house and she didn't want to go. I was scared, but I forced out anyway, making sure that she couldn't physically bend around and bite me. But I was afraid she really would bite! You must prove that your in charge, as mentioned. Make Cesco do things that are out of his comfort zone bit by bit, slowly, so he learns to obey and trust you. If he is used to going for walks for example, stop him for a minute or 2. He may get restless, but make him learn to do things that he may not want to do, but be sure he knows he MUST obey. Or if he is used to sitting down while you brush him, make him stand. Do things to let him know you have the authority to tell him to do something he doesn't usually do. YOU are in charge. Be patient and don't give up. He hardly sounds like a mean dog. Just some behavioral problems is all.