https://click4r.com/posts/g/18....568906/the-reasons-t
https://output.jsbin.com/mokomimugi/
Buy Duxi Yorkshire Biewer? The Biewer Yorkshire Terrier is the result of a rare recessive gene that occurs in two Yorkshire Terriers. The parents created an eagle puppy (normally Yorkies are slate grey and tan, or cream, and Merle). This piebald puppy intrigued breeders Werner and Gertrud Biewer, who started breeding Yorkshire Terriers to create more puppies with the white markings. The breed was refined in such a way that it became its