You need to do a lot more research, you have quite a few misconceptions. It's very difficult to produce a "show quality dog," but no one should ever breed just to produce pets. When you say, "Yorkie designer hybrid" the real definition is called a mutt, and while there's nothing wrong with them, we have plenty of them in the pound that we kill each year. You need to learn why people started purebred breeding in the first place. Breeders wanted to produce a predictable dog for a particular task. Physical traits as well as behavioral traits were important. Nowadays, , we don’t buy a dog so much for a certain task, but more for pet, but it’s still important for buyers to understand the temperament and physical traits of a dog. Little things like the wrong coat type can turn a dog into a grooming nightmare, and people need to understand the activity levels of the dogs they choose so that it’s a good fit. When a puppy buyer can predict what an adult dog will look like and how it will behave, they are much more likely to keep it, instead of sending it off to the pound. I recommend reading these two articles,
http://www.yorkietalk.com/forums/bre...-answered.html http://www.yorkietalk.com/forums/bre...t-breeder.html