In humans, various mutations of the MC1R gene result in red hair, blond hair, fair skin, and susceptibility to sundamaged skin and melanoma.[6] Aeumelanic hair coats, associated with mutations of the MC1R gene, have also been identified in mice,[7] cattle,[8] dogs,[9] and horses.[10] These coat colors are called "yellow" in mice and dogs, "red" in cattle and chestnut in horses.