Wild yaks with gold coloured hair are known as the Wild Golden Yak (). These animals include water buffalo, goat, sheep, camel, donkey, horse, reindeer and yak. Yak and sheep graze in the highlands. Animals such as sheep, camel, yak, and goats are mostly reared. Hand spinners also use fiber from animals such as llamas, camels, yak, and possums. In mountainous regions, like Tibet and the Andes, yak and llama are reared. At one point, some steppe bison crossbred with the ancestors of the modern yak. The sausage uses natural casing employing the use of yak or sheep's intestine. References to oxen may include those to the common cow, the buffalo, and the yak. Most of the people are dependent on the rearing of goat and yak. Domestic yak, gayal, and Bali cattle do not descend from aurochs. The yattle is a cross between a cow and a yak. They live in the Megapolis Zoo along with friends Yakkety Yak and Baldy the Eagle. It is descended from the wild yak ("Bos mutus"). Jasmine tea and yak butter tea are drunk.