Yak in Drak Yerpa, Tibet, China, Asia

Yak grazing, Orkhon valley, South Hangay province, Mongolia, Central Asia, Asia

Shepherd on horse rounding up yaks at sunset, Burentogtokh district, Hovsgol province, Mongolia, Central Asia, Asia

Yak on the shores of Hovsgol Lake, Hovsgol province, Mongolia, Central Asia, Asia

Yaks grazing on the vast open rangelands on the edge of the Tibetan Plateau in Sichuan Province, China, Asia

Yaks grazing on the vast open rangelands on the edge of the Tibetan Plateau in Sichuan Province, China, Asia

Yaks, the beasts of burden in the Himalaya, on their way to Everest Base Camp, Khumbu Region, Nepal, Asia

Yak in mountain village of Altit in Hunza region of Karokoram Mountains, Pakistan

Yak caravane crossing the Khumbu glacier moraine, Khumbu Himal, Sagarmatha National Park, Nepal

Historic stupa at Thame, Bhote Koshi valley, Khumbu Himal, Sagarmatha National Park, Nepal

Mani inscriptions on a yak skull, Himalayas, Ladakh, India

Loaded yak (Bos grunniens) in front of Mt. Thamserku (6608 m), Sagarmatha National Park, UNESCO World Heritage Site, Khumbu Himal, Nepal

Yak caravane at Dudh Koshi valley, Sagarmatha National Park, Khumbu Himal, Nepal

Mongolian child riding on a horse towards a summer camp of the nomads with a yak herd, ger or yurts round tents, in a lush green grass landscape near the Khuisiin Naiman Nuur Nature Reserve, Oevoerkhangai Aimak, Mongolia, Asia

Yak (Bos mutus), herd, Pamir mountain range, Tajikistan, Central Asia

Yak (Bos grunniens) in a forest, Sweden, Europe

yak at Lobuche Khola valley with Arakamtse (6423) and Lobuche East Peak (6119), Khumbu Himal, Sagarmatha National Park, Nepal

Yak caravane obove Machhermo Sherpa village (4410), Sagarmatha National Park, Khumbu Himal, Nepal

A packed Yak (Bos mutus) at a stupa with prayer flags in Mongla, Khumbu, Sagarmatha National Park, Nepal, Asia

Sherpa village Khumjung with Thamserku (6608), Sagarmatha National Park, Khumbu, Nepal

Yak caravane above Machhermo Sherpa village, Sagarmatha National Park, Khumbu Himal, Nepal

Domestic yak (Bos grunniens) portrait, snow, tirol, Kitzbuehel, Wildpark Aurach, Austria, Europe

Sherpa village Khumjung with Thamserku (6608), Sagarmatha National Park, Khumbu, Nepal

Yaks, Lake Khuvsgul, Mongolia, Asia