Grévy's zebra is the largest living wild equid and the most threatened of the three species of zebra. Superficially, Grévy's zebras' physical features can help to identify it from the other zebra species. Compared to other zebra species, Grévy's are the tallest; they have mule-like, larger ears, and have the tightest stripes of all zebras. They have distinctively erect manes, and more slender snouts.