Charlie Summers / African lion (Panthero leo) male giving flehmen grimace, Tanzania, East Africa
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Anup Shah / Western chimpanzee (Pan troglodytes verus) female 'Fanle' aged 13 years grinning due to stress as her infant son 'Flanle' aged 3 years struggles to suckle, Bossou Forest, Mont Nimba, Guinea. January...
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Charlie Summers / Plains Zebra (Equus quagga) Flehmen grimace, Ngorongoro Crater, Tanzania
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Adam White / Flushing and Mylor men's crew nearing the finish line in "Penarrow" at the 19th World Pilot Gig Championships, Isles of Scilly, May 2008
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Charlie Summers / Rocky Mountain Bighorn (Ovis canadensis) portrait of ram displaying Flehman grimace to tell if a Ewe has come into estrous, McMinn Plateau,Yellowstone National Park, Wyoming, USA
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Mary McDonald / Mountain Gorilla (Gorilla beringei beringei) head portrait in an expression of grimace, Rwandan jungle in the Volcanoes NP, Rwanda, Central Africa.
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Edwin Giesbers / RF- Two Kodiak / Alaskan brown bears (Ursus arctos middendorffi) fighting, captive. (This image may be licensed either as rights managed or royalty free.)
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Edwin Giesbers / RF- Head portrait of Giant panda (Ailuropoda melanoleuca) chewing on bamboo in snow, captive born in 2000. Occurs in China. (This image may be licensed either as rights managed or royalty free.)
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Fiona Rogers / Sub mature wild male Mandrill (Mandrillus sphinx) making threatening grimace. Sitting in gallery forest during dry season. Lope National Park, Gabon. July 2008.
