Polar Bear (Ursus maritimus) two bears wrestle during a play fighting session along the shores of Hudson Bay, near Churchill, Manitoba, in November

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D00041611.jpg

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© Daniel J. Cox/NaturalExposures.com

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357x540 / 109.8KB

Canada Churchill Ursus maritimus aggression aggressive battle cover fight global warming marine mammal motion nanook nanuk north polar climate polarbear snow threatened vertical

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