Photo of the Day

a pair of muskoxen on Wrangel Island
July 11, 2013

Muskoxen, Wrangel Island

This Month in Photo of the Day: Animal Pictures

Two bull muskoxen size each other up. In September, with mating season under way, bulls engage in frequent head-butting confrontations to establish dominance.

See more pictures from the May 2013 feature story "Russian Refuge."

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Photograph by Sergey Gorshkov
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