The Dall Sheep inhabit the mountain ranges of Alaska. These white creatures are most notable for the males’ massive curled horns. Females, also carry horns, but theirs are shorter and more slender and only slightly curved. Dall rams as old as 16 years have been seen, and ewes have been known to reach 19 years of age. Generally, however, a 12-year-old sheep is considered quite old. Also known as thinhorn, Dall Sheep are the northernmost wild sheep in the world. Dall sheep spend most of their lives on the jagged slopes of mountains. Their cloven hooves with rough pads help them cling to cliff edges and broken ledges, where they flock to elude predators. In spring and early summer, Dall Sheep often visit mineral licks to restore the nutrients they lost during the long winter.