A Nature study shows that researchers identified a bone as being Denisovan & analysed other mammalian bones found at the site to find that the ancient humans fed on & processed these bones.
About:
The yak (Bos grunniens) is a large, long-haired bovine native to the Himalayan region and Tibetan Plateau.
These hardy animals are well-adapted to high altitudes, cold temperatures, and low oxygen environments.
Habitat: They typically live at elevations between 3,000-5,000 meters (9,800-16,400 feet).