wild yak

Wild Yak Wild Yak, whose Tibetan name is "Heel", is the most typical animal in Tibet Plateau. They are tall and have strong vitality. They can reach 3 meters in length and weigh 3 times as much as domestic yaks. The whole body is covered with long and thick black hair, which hangs down to the ground for lying in the snow to keep out the cold. The hair is 2.4 times thicker than that of domestic yaks, so that they can live as usual at MINUS 40℃. Wild yaks also like to live in groups, generally more than 30, and many can reach more than 300. People often see wild yaks grazing in the dark. They are fierce, but they still "recognize relatives" with domestic yaks that have been domesticated by human beings. Tibetan herders often retrieve lost domestic yaks from wild yaks, and wild yaks sometimes join the ranks of domestic yaks. The first generation of calves born by domestic yaks and wild yaks, called "heel rub" in Tibetan, are strong and grow rapidly, but their temperament is quite fierce.
Reprinted with attribution： https://cnlocality.com/(Chinese Specialty Products)