Steven Kazlowski / Polar bear (Ursus maritimus) sow with her cub outside their den in late winter, Arctic coast of Alaska, USA
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Steven Kazlowski / Polar bear (Ursus maritimus) sow with her cub outside their den in late winter, Arctic coast of Alaska
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Steven Kazlowski / Polar bear (Ursus maritimus) sow plays with her spring cub outside their den in late winter, Alaska
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Steven Kazlowski / Polar bear (Ursus maritimus) sow plays with her spring cub outside their den in late winter, Alaska
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Steven Kazlowski / Polar bear (Ursus maritimus) sow plays with her spring cub outside their den in late winter, Alaska
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Steven Kazlowski / Portrait of Polar bear (Ursus maritimus) sow with spring cub, newly emerged from their den in late winter, Arctic coast, Alaska, USA
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Steven Kazlowski / Polar bear (Ursus maritimus) sow with spring cub, newly emerged from their den in late winter, Arctic coast, Alaska, USA
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Andy Rouse / Polar Bear (Ursus maritimus) mother and cub (18 months) walking away after swimming, Svalbard, Norway (non-ex) September 2009. Images 01262527 and 01262528 are cropped from this frame
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Andy Rouse / Polar bear (Ursus maritimus) new year cub, 6 months, standing on hind legs, Svalbard, Norway (non-ex) July 2007
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Andy Rouse / Polar bear (Ursus maritimus) mother rolling in snow watched by new year cubs, 6 months, pink tint of fur caused by snow algae, Svalbard, Norway, July 2007
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Andy Rouse / Polar bear (Ursus maritimus) new year cub, 6 months, standing on hind legs, Svalbard, Norway (non-ex) July 2007
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Andy Rouse / Polar bear (Ursus maritimus) new year cub, 6 months, standing on hind legs, Svalbard, Norway (non-ex) July 2007
