Anup Shah / Nile crocodile holding newly hatched young in mouth {Crocodylus niloticus} Kenya
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Ann & Steve Toon / Nile crocodile (Crocodylus niloticus) at night, Zimanga private game reserve, KwaZulu-Natal, South Africa.
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Neil Aldridge / Nile crocodile (Crocodylus niloticus) snatching a Mozambique tilapia (Oreochromis mossambicus) in its jaws, Shingwedzi River, Kruger National Park, South Africa.
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Neil Aldridge / Nile crocodile (Crocodylus niloticus) resting in the sun on a grassy island in the middle of the Chobe River, northern Botswana.
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Wim van den Heever / Nile crocodile (Crocodylus niloticus) still in the fast flowing water of the Mara River, taken with slow shutter speed. Masai Mara, Kenya.
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Charlie Summers / Nile crocodile (Crocodylus niloticus) making its way through sand to the Rufiji River, Selous Game Reserve, Tanzania.
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Denis-Huot / Starving group of Nile crocodiles (Crocodylus niloticus) feeding on Zebra, Masai-Mara game reserve, Kenya.
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Denis-Huot / Nile crocodile (Crocodylus niloticus) lunging at Thomson's gazelle (Eudorcas thomsonii) in water, Mara river, Masai-Mara game reserve, Kenya.
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Martin Dohrn / Thermal camera image of hippos (Hippopotamus amphibius), crocodile (Crocodylus niloticus) and wildebeest (Connochaetes taurinus, far left) on the banks of the Mara River, Masai Mara, Kenya. Image take...
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Anup Shah / Nile crocodile (Crocodylus niloticus) emerging from the Mara River - wide angle perspective, Masai Mara National Reserve, Kenya. August 2009.
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Anup Shah / Nile crocodile (Crocodylus niloticus) emerging from the Mara River - wide angle perspective, Masai Mara National Reserve, Kenya. August 2009.
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Anup Shah / Nile crocodiles (Crocodylus niloticus) competing over a wildebeest carcass. Masai Mara National Reserve, Kenya, August 2009
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Roland Seitre / European Hornet (Vespa crabro) building 'paper' nest from masticated wood. Tours, France, August.
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Roland Seitre / European Hornet (Vespa crabro) making 'paper' nest from masticated wood. Tours, France, August.
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Roland Seitre / European Hornets (Vespa crabro) consuming insects at their nest. Tours, France, August.
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Roland Seitre / European Hornets (Vespa crabro) consuming a larvae. Workers can control sex-ratios and population structure through this behaviour. Tours, France, August.
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Roland Seitre / European Hornets (Vespa crabro) consuming a larvae. Workers can control sex-ratios and population structure through this behaviour. Tours, France, August.
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Roland Seitre / European Hornets (Vespa crabro) at nest, constructing cells for pupae development. Tours, France, August.
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Roland Seitre / European Hornets (Vespa crabro) at nest, constructing new cells for pupae development. Tours, France, August.
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Roland Seitre / European Hornets (Vespa crabro) consuming a larvae. Workers can control sex-ratios and population structure through this behaviour. Tours, France, August.
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Roland Seitre / European Hornets (Vespa crabro) at nest, communicating by touching mandibles together. Tours, France, August.
