Wild

The wild yak has a dense undercoat of soft, close-matted hair which is covered by generally dark brown to black outer hair. Its long, shaggy coat reaches almost to the ground. The wild yak can weigh up to 1000 kg (2200 lb) with a shoulder height of over 2 m (6.5'). It occurs in treeless uplands, including plains, hills, and mountains, from as low as 3200 m (10,500') up to the limit of vegetation at about 5400 m (18,000'). ref: animalinfo.org

The yak, Bos grunniens or Bos mutus, is a long-haired bovine found throughout the Himalayan region of south Central Asia, the Tibetan Plateau and as far north as Mongolia and Russia. In addition to a large domestic population, there is a small, vulnerable wild yak population. In the 1990s, a concerted effort was undertaken to help save the wild yak population. The English word "yak" derives from the Tibetan (Tibetan: Wylie: g.yag), or gyag – in Tibetan this refers only to the male of the species, the female being called a dri or nak. In English, as in most other languages which have borrowed the word, "yak" is usually used for both sexes. The Wild Yak is on the endangered animals list.

http://en.wikipedia.org/wiki/Yak