I find this thread very interesting, and have a question. Sorry if this makes me sound like a "noob" but what's the difference between "working breed" and "working bred." Does the first mean a category that the AKC has and the second a line of dogs that does a job and does it well so you breed from those lines?
I really want to understand the difference because someone on here has made the use the "working bred" term when referring to her yorkie, and the yorkie was far from standard. I have nothing against off standard yorkies (see avatar

) but I don't think a cutie like mine should be bred. He has nothing other than cuteness to offer the world, and that's simply not enough.
One last question, even our toy breed yorkies had some working function at some point in time, right? How many of your yorkies actually hunt rats and mice? How does a show coat affect the yorkies ability to do this job? Or is it that the yorkie has been transformed so much that they are just lap dogs and nothing more? Just curious!