Great post by the Britster.
We always say that yorkies take a lot of work, and it sounds like you confirm this since you are having more trouble with him than your other dogs.
I would do three things:
- Take him to an obedience school. Talking with a trainer there should help a lot.
- Address overall emotional / intellectual development. Assess if he is getting enough exercise and stimulating his brain exploring new things. As Britster said, obedience training can bond you together, stimulate his mind, and teach him to mind you.
- Break down each problem you describe - teething, barking, potty, etc - and look for training on each one.
For teething dogs, I've heard that putting a chew toy in the freezer can help numb their gums.
For barking: if your dog barks and barks and barks until you JUST CAN'T STAND IT ANYMORE and you give in... you've not only taught your dog that barking works, you've taught him that he needs to be really persistent about it.
If your dog has developed a monster barking habit, you have to steel yourself to ignore him. He may bark for as long as twenty minutes. But at some point he has to stop, and at THAT POINT you reward him with attention.
Okay, four things
- read up on yorkie temperment if you haven't already. They are known for being fearless, stubborn, clingy, and barky, just like you describe.