Tundra hares

Tundra hares are seen inside their open-air enclosure at Royev Ruchey zoo in Krasnoyarsk. Tundra hares are seen inside their open-air enclosure at Royev Ruchey Zoo, with the air temperature at about minus 35 degrees Celsius (minus 31 degrees Fahrenheit) on the suburbs of Russia's Siberian city of Krasnoyarsk February 1, 2012.   Source: Reuters/Vostock-photo  

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