Donald M. Jones / Dall's Sheep (Ovis dalli) rams posturing, central Alaska
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Donald M. Jones / Dall's Sheep (Ovis dalli) rams posturing, central Alaska
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Nick Garbutt / Adult male Hippopotamus (Hippopotamus amphibius) posturing in agressive 'yawn' behaviour, Luangwa River, South Luangwa National Park, Zambia, November
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Nick Garbutt / Adult male Hippopotamuses (Hippopotamus amphibius) posturing in aggressive 'yawn' behaviour, Luangwa River, South Luangwa National Park, Zambia, November. Digital composite (two frames stitched togeth...
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Yva Momatiuk & John Eastcott / Mustang (Equus caballus) harem stallions posturing as prelude to fight, Montana
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Roger Powell / Pair of Common eiders (Somateria mollissima). Male preening with female circling and posturing for copulation. Amble Harbour, Northumberland, England, UK, March
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Donald M. Jones / Elk (Cervus elaphus) young bulls play-fighting, western Canada
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Donald M. Jones / Elk (Cervus elaphus) young bulls play-fighting, western Canada
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Donald M. Jones / Dall's Sheep (Ovis dalli) rams posturing, central Alaska
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Donald M. Jones / Dall's Sheep (Ovis dalli) rams posturing, central Alaska
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Donald M. Jones / Dall's Sheep (Ovis dalli) rams posturing, central Alaska
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Andy Trowbridge / Male Chamois (Rupicapra rupicapra) posturing with hair raised along its back. Lauson's Valley, Gran Paradiso National Park, Italy, September.
