If one buys a true Biewer from Germany, the research is done. The dogs have a pedigree that go as far back as a yorkie. As far as I am concerned, the changes in the color are a lack of pigment (a genetic marker or defect, as you will). I do not think they should be judged as Yorkshire Terriers, in fact it would be impossible. However, I did buy mine looking at her top line, her ear set, her weight etc. I think it is not a problem to have two different "breeds" of dogs. There is no indications that the ORIGINAL Biewers from Germany are in reality a mixed breed. Should Mr.Biewer have neutered/spayed that original genetic defect? (Well, that is too late to answer). They are here to stay! Just My Humble Opinion.
