Dun (color)

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Dun is a brownish-gray color, sometimes seen in the hair coats of horses, characterized by a body color ranging from sandy yellow to reddish-brown. Dun horses always have a dark stripe down the middle of their back, which may continue into the tail and mane, and may have darker faces and legs. For a full explanation of the genetics of this color see Dun gene.

Buckskin horses look very similar to duns, but lack the stripe down their backs. Although the terms are often used interchangeably, buckskin and dun colorations are actually caused by two completely different genes.