Nomadic pastoralists were dependent on domestic yaks (Bos grunniens)... | Download Scientific Diagram
Wild yak - Wikipedia
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Free art print of Black and white Yak. Black and white Yak - bos grunniens or bos mutus on the way to Everest base camp and mount Pumo ri - Nepal | FreeArt | fa25072147
Bos grunniens and Bos mutus (Artiodactyla: Bovidae)