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).
The zebra is the horse of the savanna. Grant's zebra is the most abundant of the 3 species of zebra. The zebra looks like a horse, only smaller. It doesn't sound like a horse, and barks instead of neighs. Its height is about 50 in. from shoulder to hoof, and weighs in at 500 to 600 pounds. It has rather short legs and a large head.