Wild yak

The wild yak (Bos mutus) is a large, wild cattle native to the Himalayas. It is the ancestor of the domestic yak (Bos grunniens). == Taxonomy == The ancestor of the wild and domestic yak is thought to have diverged from Bos primigenius at a point between one and five million years ago. The wild yak is now normally treated as a separate species from the domestic yak (Bos grunniens). == Description == The wild yak is among the largest extant bovid species. Adults stand about 1.6 to 2.05 m (5.2 to 6.7 ft) tall at the shoulder, and weigh 500–1,200 kg (1,100–2,600 lb). The head and body length is 2.4 to 3.8 m (7.9 to 12 ft), not counting the tail of 60 to 100 cm (24 to 39 in). The females are about one-third the weight and are about 30% smaller in their linear dimensions when compared to bull wild yaks. Domesticated yaks (Bos grunniens) are somewhat smaller.They are heavily built animals with a bulky frame, sturdy legs, and rounded cloven hooves. To protect against the cold, the udder in females and the scrotum in males are small, and covered in a layer of hair.