History Of The All-Black Yorkshire Terrier
The All-black Yorkshire Terrier is precisely what one might envision: a Yorkshire Terrier sporting a completely black coat. The sole distinction between the black and tan or blue and tan Yorkshire Terrier and the all-black variant is the absence of tan or any other coloration in the latter’s coat.
Genetics
Colour genetics once again play their role and to keep it simple the All-Black Yorkshire Terrier carries a dominant black gene which prevents the expression of tan.
Like the Chocolate Yorkshire Terrier the All-Black Yorkshire Terrier can also have white markings, often on the chin, chest and/or paws as shown below.
Kennel Club Breed Standard
All-Black Yorkshire Terriers have been a part of the breed’s history from the beginning, yet they remain exceedingly rare. This rarity is due to breeding practices; all-black coats do not meet the Kennel Club’s breed standards, which specify black and tan or blue and tan coats, making them ineligible for show. However, this is not the case in Russia and Europe, where dog clubs celebrate the diversity of Yorkshire Terriers by holding special classes for all colors, allowing these unique dogs to achieve Champion Titles.