The yak (Bos grunniens) 's a long-haired bovine found throughout the Himalayan region of south Central Asia, the Qinghai-Tibetan Plateau and as far north as Mongolia. In addition to a large domestic population, there's a small, vulnerable wild yak population. In Tibetan, the word gyag refers only to the male of the species; a female's a dri or nak. In most languages which borrowed the word, including English, yak's usually used for both sexes. The first Yaks were descended from European Ox. Ya… (More on Yak)