Here is my opinion... A Yorkie that is not the right colors , to me, should not be considered a Pure bred Yorkie.... A parti colored Yorkie? To me that is a mixed breed, not A pure bred.
A Biewer is a specific breed of dog... It is not called a Biewer Yorkie. I have a hard time accepting off colored Yorkie's true to the breed because they are technically not.
As much as they are beautiful , I feel like they are of a mix breed. .. I am sorry, I do not want to offend anybody.
As for the Black and Tan Yorkie, I understood that a young puppy, ar a dog less the a few years old could still have these colors. When they mature their true adult colors appear. I have not seen an adult dog retain a black and tan coat the rest of it's life... I probably am mistaken though.
