Steven Kazlowski,Steven Kazlowski / Polar bear (Ursus maritimus) juvenile rolling around on newly formed pack ice, Beaufort Sea, off the 1002 area of the Arctic National Wildlife Refuge, North Slope, Alaska
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Tony Heald / Zebra (Equus quagga) foal running through Devil's Thorn flowers (Tribulus terrestris). Etosha National Park, Namibia, January.
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Andy Rouse / Two European Rabbit (Oryctolagus cuniculus) young playing and jumping. UK, August.
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Andy Rouse / Two European Rabbit (Oryctolagus cuniculus) young playing, leaping in air. UK, August.
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Ernie Janes / Domestic sheep, lambs playing in a field, Norfolk, UK, March
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Jeff Foott / Maasai, young warriors, one with lion mane head dress. Maasai Village, Kenya. September 2006.
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Jeff Foott / Maasai, young warriors, one with lion mane head dress. Maasai Village, Kenya. September 2006.
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Jeff Foott / Maasai, young warriors, two with lion mane head dress. Maasai Village, Kenya. September 2006.
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TJ Rich / Young girl selling cashews at roadside, Gampaha, Sri Lanka, December 2012.
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Robin Chittenden / Boy photographing an Icelandic Redwing (Turdus iliacus coburni), Iceland, August. Model released
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Graham Eaton / Aerial view of river Afon Elan, youthful stage of river showing the meanders within a terrace, near Rhayader, Wales, UK April
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Eric Baccega / Portrait of young Naro San woman, Kalahari, Ghanzi region, Botswana, Africa. October 2014.