Ben Hall / Fallow deer (Dama dama) in woodland clearing at dawn, Cheshire, UK November
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Nick Garbutt / Male American Bison (Bison bison) walking through snow. Firehole River Valley, Yellowstone National Park, Wyoming, USA. January
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Tony Wu / Humpback whale (Megaptera novaeangliae australis) female, stationary with calf heading to surface for breath of air. Vava'u, Tonga, South Pacific.
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Danny Green / RF - Bison (Bison bison) breathing in the cold air, Yellowstone National Park, USA, February (This image may be licensed either as rights managed or royalty free.)
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Roy Mangersnes / Juvenile female Polar bear (Ursus maritimus) lying down protecting a seal carcass at sunset, Svalbard, Norway, March.
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Andy Rouse / Mute swan (Cygnus olor) stretching in morning light, UK, February.
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Markus Varesvuo / Male Black grouse (Tetrao / Lyrurus tetrix) with breath visible in cold, Liminka, Finland, March.
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Markus Varesvuo / Male Capercaillie (Tetrao urogallus) head portrait with breath visible in cold air, Kuusamo, Finland, March.
Sean Crane / Northern Elephant Seal (Mirounga angustirostris) male calling in territoral display with breath visible, San Simeon, California
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David Pattyn / Great crested grebe (Podiceps cristatus) in a threathening posture trying to intimidate another grebe in a territorial dispute. The Netherlands. April 2014
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Markus Varesvuo / Black Grouse (Tetrao tetrix) displaying with breath vapor at dawn, Utajarvi, Finland, April