How big is a domestic yak?
about 2 metres high at the shoulder and weighs 1000kgs
In winter a wild yak can survive temperatures as low as - 40 degrees (F). A wild yak doesn't reach full size until 6 to 8 years of age. In wild yaks, births usually occur in June and a single calf is born every other year. Dried yak dung is used as fuel in the treeless Tibetan plateaus. The Sherpas of Nepal call the males of the species "Yak" and the females "Nak," or "Dri."…
.The yak is listed as Vulnerable by the International Union for Conservation of Nature. Its number one current threat is poaching. It is also losing its habitat to farmers, who use yak land for raising their livestock. A third problem yaks face is competition with their domestic counterparts, who are capable of spreading disease
Domestic yaks are found throughout the world, predominantly in central Asia (China, Mongolia, Nepal, India, Bhutan) where the population is about 14 million. About 4 million yaks live in Tibet alone, accounting for 30% of China's total yak population. In the United States and Canada there are less than 2000 yaks, including yak hybrids, which are privately owned or in zoos. The origin of yaks in North America was not well documented.