Basically they are the same thing. They both came from two traditional colored yorkies who both carried the parti gene.
bchgirl explained the differences in registration.
The parti is considered a yorkie by the AKC and can be bred to other yorkies and the offspring can be registered AKC.
The Biewer was allowed to become a breed of it's own so if a Biewer is bred to a yorkie, the offspring are considered to be a mixed breed and cannot be registered AKC. |