According to legend, when the first ray of sunshine in the world shone on Kailash, the first yak appeared.When the Tibetan ancestors first landed on the plateau, they were unable to gain a foothold and turned to the mountain gods for help. The mountain gods divided the wild yaks into two groups. Some went down the mountain to help the Tibetans, carrying heavy objects and contributing their own hair and milk, becoming today's domestic yaks.The other part continues to stay in the mountains, maintaining their ancient living habits, and is still “wild yaks”.

Long-term reproduction has seriously degraded the body shape and disease resistance of % domestic yaks, making them unable to adapt to the cold winters of the plateau. Herders urgently need to find ways to improve the genetics of the population.With intensive grazing, people and wild yaks have come closer together, and problems have arisen.Although wild yaks can help herders improve the genes of domestic yaks, they often take away some domestic yaks, and the genes of domestic yaks will affect the purity of wild yaks' genes. Domestic yak diseases will also cause irresistible consequences to the wild yak population.blow.No one knows how this game will end in the future.