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Originally Posted by Koran  Biewers are pure bred yorkies with a gene difference. They are not mixes by any means. There is testing done to prove this because unscrupulous breeders do mix breed to attain that look. There sometimes called Party colored. But real Biewers have the piebald gene (dont ask me to explain it all but there are lots of resources if you google Biewer.) but were created from standard yorkies and there are no other dogs in the mix. |
Again, that depends on who you ask. There are some Biewer advocates who have had new testing done on their dogs that prvoe there IS something else in the mix, and some who stand by the claims of the breed's originators that they decended from only standard Yorkies. The origins or genetic makeup of Biewers are not exactly universally agreed upon at this point.