A dun horse is used to describe any bay, black, or chestnut-based horse affected by the dilution gene that brightens both red and black pigments in its coat colour, lightening the base body coat and suppressing the underlying base colour to the mane, tail, legs, and primitive markings. The classic dun is a grey-gold or tan, characterised by a body colour ranging from sandy yellow to reddish brown.[1]

Both the female and male dun horses, the dun mare and dun stallion, are possible corporeal forms of the Patronus Charm.[2]


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