Staffan Widstrand / RF- Jaguar head profle portrait (Panthera onca) head portrait captive. Pantanal, Brazil. (This image may be licensed either as rights managed or royalty free.)
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Felis Images / Asiatic lion (Panthera leo persica), female and cubs in morning light, cub biting mother's leg. Gir National Park, Gujarat, India. Photo Phillip Ross/Felis Images
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Ann & Steve Toon / Lion (Panthera leo) male snarling at night, Zimanga private game reserve, KwaZulu-Natal, South Africa, September
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Paul Williams / Lion (Panthera leo) close up of teeth while its snarling, captive.
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Wim van den Heever / African lion (Panthera leo) growling at potential danger in the water (Panthera leo) Okavango Delta, Botswana.
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Edwin Giesbers / Barbary macaque (Macaca sylvanus) baring teeth as a sign of submission, Gibraltar Nature Reserve, Gibraltar,
Ole Jorgen Liodden / Bengal tiger (Panthera tigris tigris) portrait, Bandhavgarh National Park, India.
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Andy Rouse / Bengal tiger (Panthera tigris tigris) 11 month cubs with mother 'T19 Krishna' in background, Ranthambhore National Park, India.
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Anup Shah / African Lion (Panthera leo) male snarling at one year old cub, Masai Mara, Kenya
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Ammonite / African lioness (Panthera leo) growling and swatting at a sub-adult male approaching a kill, footage taken at night using thermal camera technology, Masai Mara, Kenya.
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Anup Shah / Black-backed jackals (Canis mesomelas) feeding on a wildebeest carcass. Masai Mara National Reserve, Kenya. Taken with remote wide angle camera.