There is a Tibetan proverb: Where there are Tibetans, there are yaks. This interdependent and inseparable relationship between animal population and human population is really rare and has typical anthropological significance. Animals are the most important friends of human beings, and yaks are the most important friends of Tibetans. Tibetans domesticate yaks and yaks raise Tibetans.
Yak horns and bones are made into milking containers, bone needle tools, religious instruments and handicrafts. Butter in butter lamps used in temples is basically extracted from yak milk.
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As a means of transportation on the plateau, yak can be traced back at least 2000 years ago. Fragments of Yak Saddle Found at Elephant Xiong Site in Ali, Tibet. For more than 2,000 years, yaks have been wandering around carrying shepherds' homes. Even in ancient wars, yaks have become soldiers' mounts. Even now, when people are climbing Mount Everest, yaks first carry mountaineering supplies to the forward camp at an altitude of 6500 meters.
Yak beef and yak milk have the characteristics of high protein and low fat, which are the main nutritional sources of Tibetan people in pastoral areas. Yak hair and yak hair can be woven into tents and clothes, and they are also excellent textile raw materials. Black yak hair tent has been the home of herders for thousands of years. Tents woven by yak hair will shrink when the weather is good, revealing dense holes and penetrating sunlight and air;
When it rains and snows, wool will swell and keep the rain and snow out. Yak skin is a good raw material of leather, which is made into various production and daily necessities. The ancient books of Tibetan medicine "Four Medical Codes" and "Blue Glazed Glazed Glass" both record the role of yak in Tibetan medicine, which is considered to be "effective in strengthening the body and preserving health".