Yaks live in the high bleak plateaus and mountains of central Asia. Their range is from the lower valleys to 20,000 foot levels. In the winter the wild yak moves from the snow-covered slopes to the valleys. These animals do not thrive in the lower and warmer parts of Asia. Coarse grasses, herbs, and lichens.
Bulls wander alone or in small groups but females and calves herd together for protection.
During the mating season in late fall or early winter, each male forms a small herd of four or five females. About nine or ten months later the females give birth to a single calf. Independence is attained after 1 year of life, full size is reached at 6-8 years, and maximum life span is 25 years. The yak is exceptionally well adapted to endure cold and shows superb stamina, which makes it an excellent animal for carrying people and other burdens. In spite of their awkward appearance, yaks are excellent climbers, surefooted and sturdy.