While the exact reason for their black tongue remains unknown, it is widely believed to be a genetic trait linked to ancient Asian breeds. The Phu Quoc Ridgeback shares this trait with the Thai ...

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On an island in Papua New Guinea, a 3-foot-long creature with a black tongue made itself at home in a village garden — or it tried to, at least. Locals spotted the “smooth” animal and caught it.

Villagers on an island in Papua New Guinea found a 3-foot-long creature with a black tongue and helped scientists discover a new species. Screengrab from a YouTube video shared by VideoElite ...

Their unique appearance and blue tongue continue to make them one of the world’s most distinctive and fascinating dog breeds. The Chow Chow is perhaps the most famous dog breed with a blue-black ...

They can become dark and lead to hairy tongue in up to 13% of the population. The hairs turn brown, black, or even white, pink, or green, in color. Typically, hairy tongue does not cause pain. It can ...