装修徐工
YAKThe dark black-brown coat is dense, wooly, and extremely shaggy, although the colour is variable in domestic yaks. 'Golden' wild yaks are also known, but are extremely rare. The shoulders are high and humped, with a broad, drooping head. The short legs have broad hooves and large dewclaws as an adaptation to mountainous environments. The horns are found in both sexes, though those of the females are considerably smaller and shorter. They grow up to 51 cm / 20 inches long in females, and 95 cm / 38 inches in males. The curved horns grow out from the sides of the head and curve upwards. Ontogeny and Reproduction Gestation Period: 258 days Young per Birth: 1 every other year.Weaning: About 1 year. Sexual Maturity: By 6 years. Life span: 23 years. The mating season begins in September, lasting for several weeks in which bulls fight each other for females. Young are born in June, the season of plenty in the Tibetan plateau. Ecology and Behavior Due to the scarcity of vegetation in their habitat, wild yaks must travel great distances in order to obtain sufficient nourishment. In July, there is a general downward shift from the high plateaus to the lower plains, where mosses and swamp vegetation are at their peak. As the temperature rises in August, the herds head back up to the plateaus, even retiring to snowy regions to beat the heat. Although sensitive to warm temperatures, wild yaks can easily tolerate temperatures of -40o C/F. In severe cold, they have been seen bathing in lakes and streams. Generally distrustful, if a herd is disturbed they will flee for a long distance, galloping with their tails held erect. If something unexpected appears in their flight path, yaks will bluff, attacking with a fast charge and normally stopping just 10-20 meters / 30-60 feet away from the intruder. In spite of their bulky, awkward appearance, yaks are excellent, sure-footed climbers. One of the few vocalizations is a loud grunt, made during the breeding season by wild yaks. Domestic yaks, however, "grunt" throughout the year - hence the specific name grunniens. Family group: Herds of 10-200 individuals consisting of females and young, adult males solitary or in bachelor groups with up to 12 members. Diet: Lichens, grasses, and tubers. Main Predators: Tibetan wolf.
歪歪悠爱福喔
牦的读音是máo。
牦牛（学名：Bos mutus或Bos grunniens，英文名称：wild yak），属于哺乳纲、真兽亚纲、偶蹄目、反刍亚目、牛科、牛亚科动物，是以中国青藏高原为中心，及其毗邻高山、亚高山高寒地区的特有珍稀牛种之一，草食性反刍家畜。牦牛能适应高寒气候，是世界上生活在海拔最高处的（除人类外）哺乳动物，分布于中国青藏高原海拔3000米以上地区。
生活习性
牦牛能适应海拔3200～4800米，大气压68420.85～55435.28Pa，氧分压14505.43～11679.01Pa，含氧量14.9%～11.44%的生态环境。其胸廓发达，心肺发育指数大，借以保护胸、腹内脏器官、外生殖器官、乳房及各关节，以防受冻。据测定，在海拔3800米的草甸草场上日放牧9.5h，牦牛日采食鲜草27.86±1.42kg。
