Ok, I know this sounds mean and I am sure I will be getting a lot of bad posts over this but take a moment to reflect on how a Mommy dog handles her pup(s) getting out of line....
She bites them back!! We had years ago a Siberian Husky puppy who loved to bite. Finally my husband one night after laying on the floor with her plahying one night our Husky decided to bite. Well, my husband bite her ear. He didn't draw blood or did any permanate damage but oh did it get her attention. She cried and never bite us again.
If Schatzie bite me over and over again and was trying to be this "alpha" dog, yes Id bite her little ear just enough to catch her attention.
Like, I said, I am not saying break skin on your Yorkie, but bite him just enough to "catch his attention" and to let him no that his behavior isn't allowed.
Follow that training with him only receiving attention when he is calm, being good or doing what "you" want.
Sooner or later, he will get the message that he needs to be good to get your praise, that is all these little one's want anyway is to please us.
Good luck and let us know how it all goes with him.
