Tibetan Yak, Wildlife Safari-Oregon
Wildlife Safari Tibetan Yak, Oregon
The yak was probably domesticated in Tibet during the first millennium B.C., and domesticated animals now occur throughout the high plateaus and mountains of Central Asia, in association with people. Yaks found in zoos are usually of the domesticated variety, which is smaller than the wild yak. There are now more than 12 million domestic yaks in the highlands of Central Asia.
The wild yak is supremely well adapted to the harsh highlands with its thick coat, great lung capacity, and ability to clamber nimbly over rough terrain. Even its blood cells are designed for high elevations - they are about half the size of those of cattle and are at least three times more numerous, thus increasing its blood’s capacity to carry oxygen. Its thick coat and low number of sweat glands are also efficient adaptations for conserving heat.
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f5.3, 1/125sec, ISO125, 75mm (18-200mm lens)
Uploaded on April 26, 2010