6 Dogs With Black Tongues — Why Do Dogs Have Black Tongues?
Chinese Shar Pei Breed » Information, Pictures, & More
Shar Pei - Wikipedia
The Chinese Shar-pei, like the Chow-Chow, are the only AKC recognized breeds to feature blue tongues, though other breeds may have spotted tongue. This is a bear-coated Shar-pei, accepted in the ring