A larger Yorkie would definitely be the best idea. But - if you get your larger Yorkie (as a pup) it is going to be very very little for a long time.
I'll bet it's hard to find an older Yorkie - you could try a dog rescue program. Lot of people find wonderful older dogs there.
And as far as size goes....even a larger Yorkie is a very small dog. And, who among us (except for some) intends to breed or show our dogs. Most of us just want a pet.
Carol Jean |