https://stamps.v4ka.com/en/catalog-4/stamp-1453
Postage stamp - Russian black Terrier 2015 - Russian Federation
Postage stamp. Russian black Terrier. Service dog. The Russian breed. Postage stamps of the Russian Federation 1992 - present. Postage stamps price and value....
russian black terrierpostage stampfederation
https://rbtclub.uk/club-information/the-russian-black-terrier.html
The Russian Black Terrier Club Code of Ethics
russian black terriercode of ethicsclub