Krijn Trimbos / Great crested grebe (Podiceps cristatus) two in territorial fight, The Netherlands, March.
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Krijn Trimbos / Great crested grebe (Podiceps cristatus) two in territorial fight, The Netherlands, March.
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Espen Bergersen / Atlantic puffin (Fratercula arctica) two fighting in snow, Hornoya bird cliff, Finnmark, Norway. March.
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Espen Bergersen / Atlantic puffin (Fratercula arctica) two birds fighting at nesting ground, Hornoya bird cliff, Finnmark, Norway. March.
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Kristel Richard / Two wild Przewalski / Takhi Horse (Equus ferus przewalskii) stallions play fighting Hustai National Park, Tuv Province, Mongolia. Endangered species. September.
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Andy Rouse / Bengal tiger (Panthera tigris tigris) 11 month cubs play fighting, Ranthambhore National Park, India.
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Andy Rouse / Bengal tiger (Panthera tigris tigris) 11 month cubs play fighting, Ranthambhore National Park, India.
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Andy Rouse / Bengal tiger (Panthera tigris tigris) 11 month cubs play fighting, Ranthambhore National Park, India.
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Andy Rouse / Mountain hares (Lepus timidus) boxing in snow, Scotland, UK, December.
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Roy Mangersnes / Polar bears (Ursus maritimus) courting on ocean ice north of Spitsbergen, Svalbard, Norway, July.
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Jean E. Roche / Group of bullfighters in European Bullfighting Championship 2012, Arenes d'Arles, Camargue, France, September 2012.
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Jean E. Roche / Man leaping over bull in European Bullfighting Championship 2012, Arenes d'Arles, Camargue, France, September 2012.
