Noticing a black spot on your dog’s tongue can be startling, yet in most cases the mark is completely harmless. Many dogs develop dark freckles or patches of natural pigmentation caused by melanin, just as people have different skin tones. These spots are usually flat, smooth, painless, and remain consistent in size and shape over time. Certain breeds such as Chow Chows and Shar-Peis are especially prone to blue-black or spotted tongues because of genetics, though mixed-breed dogs can show the same trait.
Occasionally a dark mark appears after a minor injury. Dogs explore the world with their mouths and may chew rough objects or accidentally bite their tongues, creating a temporary spot as part of the healing process.
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