[FidoTheYorkie]

Not use a shock collar!
I think thats cruel, there are ways to make this proplem dissapear without shock collars.
I like to use the Cesar Milan training ways, I use them on my yorkie, and they work really well.
Go to a good dog trainer , get private lessons with her at first then go to lessons where there are other dogs later.
A good vet does not reccomand a shock collar, they reccomand a good dog trainer for you and your yorkie!