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Grulla Horse

Grulla (or grullo) is a color variety of dun, a coat color of horses, recognized by tan-gray hairs on the body with dorsal stripes on the back and black point coloration on the lower legs, mane, and tail. Grulla horses carry the dun dilution gene along with the black gene and possess mouse-colored hairs.

The term ‘grulla’ is derived from a Spanish word for a crane and ‘grullo’ in Spanish means gray horse. For this reason, some horse enthusiasts use grulla to represent a mare and grullo to denote a stallion.

There are various shades of grulla, ranging from slate grulla, light grulla or silver grulla, silver dun, blue dun, to black dun. In the Highland Pony, the grulla is known as mouse dun, while in the Icelandic Horse and Fjord Horse it is referred to as gray dun.