Domesticated yaks (Bos Grunniens or the grunting ox) are thought to have been domesticated by Qiang herdsmen on the Tibetan (Qinghai) Plateau around 4,500 years ago. The Tibetan culture of the Himalayan Plateau is intertwined with yak just as Native American Plains Indian culture is intertwined with the American Bison.
Zebras are a keystone species in the Kalahari; they are a source of food both for predators such as lions and for scavengers such as brown hyenas and whitebacked vultures. Shown here are birds surveying an injured animal on the Makgadikgadi grasslands. (Adrian Bailey).
Plains zebra and mountain zebra are considered to be endangered. Gravy zebra is also known to reside in Ethiopia and northern Kenya. Hyenas and wild dogs are the most frequent predators of zebras. When these intruders arrive, zebras tend to huddle together while keeping foals in the middle and stallions do the rest.