Denis-Huot / African Elephant (Loxodonta africana) kneeling in mud and rain. Aberdares National Park, Kenya.
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Bryan and Cherry Alexander / Weak Reindeer (Rangifer tarandus) being carried on herder's sled. Yamal, Northwest Siberia, Russia, February.
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Brent Stephenson / Weak-shelled Shore Crabs (Grapsus tenuicrustatus) on the reef edge with waves breaking. Tahanea, Tuamotus, French Polynesia, November.
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Brent Stephenson / Weak-shelled Shore Crabs (Grapsus tenuicrustatus) on a wave platform. Puamau, Hiva Oa, Marquesas, French Polynesia, November.
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Orsolya Haarberg / Winter landscape with snow-covered trees in forest and weak winter sun, Riisitunturi National Park, Lapland, Finland, February 2007
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Bryan and Cherry Alexander / Nenets woman feeding boiled fish to young, weak Reindeer / Caribou (Rangifer tarandus). Yamal, Siberia, Russia, 1993.
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Bryan and Cherry Alexander / Nenets woman feeding boiled fish to young weak Reindeer / Caribou calf (Rangifer tarandus) at winter camp. Yamal, Siberia, Russia, 1996.
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Roy Mangersnes / Weak Aurora borealis over Longyearbyen, Spitsbergen, Svaldbard, Norway, March 2009
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Andy Rouse / Male Cheetah (Acinonyx jubatus) watching for a weak Gazelle, Musiara Marsh, Masai Mara, Kenya (non-ex)
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Anup Shah / Orang utan {Pongo abelii} female drinking with weak baby Gunung Leuser NP Sumatra Indonesia. Edita has stolen Forester from Suma.
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Anup Shah / Female Sumatran Orang utan 'Edita' with weak male baby 'Forester', stolen from another mother 'Suma' (Pongo abelii) Gunung Leuser NP, Sumatra Indonesia. Edita had recently lost her own baby.
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Hermann Brehm / Lorry crossing weak road bridge over wetlands in the Pantanal, Brazil