I've noticed with all the photos that I've been looking at of the Yorkies..some tend to have a shorter snout (I've read that this trait is called a "baby doll face") If I do decide on the Yorkie as the breed that I will get, I would deffinately want one with a shorter snout. is this hard to come across?..do certain breeders breed for this trait? in other words, will I have trouble finding a puppy with this trait, or is it common?...they just tend to keep that puppy look forever when they have the shorter snout