Thanks for the reply. He does know how to sit, stay, off, leave it, come, etc. Although he doesn't stay or come that well.

This morning he went right to the door by himself and let me hook him up, so I don't get it. Normally it's a battle with me holding a treat and him "sitting" and "staying" after the command, then moving backwards sitting and staying along the way. I know he wants the treat cause he's licking his chops the whole time.
The big problem with Yorkies, IMHO, is that they are so cute you can't get mad at them.