Carol Walker / Mustang / wild horses, second year cremello colt Claro play fighting with bay, McCullough Peak herd, Wyoming, USA, July 2009

Chadden Hunter / Filming on the Antarctic sea-ice at the edge of a small hole. A cameraman gets a shock when a Killer whale (Orcinus orca) mother and calf explode out of the water in front of his face. Taken on locat...

Juergen Freund / Researcher Guido Westhoff handling a curl snake (Suta suta) caught earlier in Corella Dam. Queensland, Australia, February 2008. Model released.

Solvin Zankl / A Costa Rican researcher monitors the temperature in the developing sea turtle nests at Ostional beach, Costa Rica, November 2009. ^^^ Sea turtles have, like many other reptiles, temperature-dependent...

Inaki Relanzon / Young buddhist monk studying in a monastery, Taungoo, Central Myanmar (Burma). September 2009

Juergen Freund / Charlotte Watson snorkels down to collect sand which may contain polychaete worms, Coral Reef census, Lizard Island, Queensland, Australia, April 2008. Model released

Uri Golman / Portrait of photographer Uri Golman with Greenland husky sled dog, North East Greenland. March 2009. Model released

Inaki Relanzon / Boy washing outdoors during rains, Inle Lake, Shan State, Myanmar, Burma. August 2009

Denis-Huot / African Elephant (Loxodonta africana) kneeling in mud and rain. Aberdares National Park, Kenya.

Richard Du Toit / Red hartebeest (Alcelaphus caama) drinking, Kalahari, Northern Cape, South Africa, January

Carol Walker / Mustangs / wild horses, cremello Cremosso and brown colt interacting, showing aggression, McCullough Peaks herd, Wyoming, USA, July 2009

Nick Upton / 2020VISION / Common / Eurasian Crane (Grus grus) chick, ten weeks, kneeling on its ankles to rest. Captive reared by the Great Crane Project, WWT Slimbridge, Gloucestershire, UK, July 2011.

Juergen Freund / Researcher Guido Westhoff catching a highly venomous Common death adder (Acanthophis antarcticus) found 10 minutes into his group's evening road collection. The death adder ranks 9th out of the top 10...

Juergen Freund / Researcher Guido Westhoff catching a highly venomous Common death adder (Acanthophis antarcticus) found 10 minutes into his group's evening road collection. The death adder ranks 9th out of the top 10...

RHONDA KLEVANSKY / A group of costumed dancers from the Oruro Carnival, sitting and bowing to the virgin in a Cathedral, Bolivia, February 2009.

Neil Lucas / Cameraman Keith Brust filming with Red Camera, in snow covered landscape, Minnesota, USA, March 2008

Kristel Richard / A Sikh makes his Nukra horse dance and kneel to the rhythm of a drum during the Maghi Mela festival, Muktsar, Punjab, India. January 2010

LYNN M. STONE / Domestic goat (Capra hircus) Oberhasli breed male goat resting on knees while grazing, East Troy, Wisconsin, USA

LYNN M. STONE / Domestic goat (Capra hircus) Oberhasli breed male kneeling to graze, East Troy, Wisconsin USA

Richard Du Toit / Warthog (Phacochoerus africanus) young feeding, Chobe National Park, Botswana

Inaki Relanzon / Wildlife photographer kneeling in sea water to photograph seals, Donna Nook National Nature Reserve, Lincolnshire, UK, November 2005

Philippe Clement / Domestic Texel sheep (Ovis aries) ewe and lamb grazing in meadow, the Netherlands

Suzi Eszterhas / African warthogs {Phacochoerus aethiopicus} female grazing while piglets suckle, Masai Mara Triangle, Kenya

Suzi Eszterhas / African warthogs {Phacochoerus aethiopicus} young, kneeling, Masai Mara Triangle, Kenya

Jose B. Ruiz / Barbary sheep (Ammotragus levia) drinking, introduced species, Spain

Anup Shah / Warthog grazing {Phacochoerus aethiopicus} Queen Elizabeth NP, Uganda

Philippe Clement / Wildebeest {Connochaetes taurinus} grooming itself by kneeling and rubbing its face and horns on the ground, Kalahari desert after the rains, Kgalagadi Transfrontier Park, South Africa

Nick Garbutt / Female Warthog {Phacochoerus aethiopicus} kneeling to graze, South Luangwa NP, Zambia

Bernard Castelein / Spotted / chital deer {Axis axis} male kneeling and drinking, Sariska NP, Rajasthan, India

Tony Heald / Young Red hartebeest {Alcelaphus buselaphus / caama} kneeling and drinking, Etosha national park, Namibia.

Toby Sinclair / Domestic Tusker Asian elephant (Elephas maximus) kneeling infront of Buddhist temple, Kataragama, Sri Lanka's second most sacred place of pilgrimage

Jeff Vanuga / Samburu warrier kneeling at the entrance of his village hut made of grass, branches, and cow dung. Masai Mara, Kenya. 2005.

Pete Oxford / Gaucho at rodeo, rear view kneeling, Chalten, Fitzroy, Patagonia, Argentina, S America

Pete Oxford / Red-legged seriema kneeling (Cariama cristata) Pantanal, Brazil

Anup Shah / Warthog {Phacochoerus aethiopicus} feeding, Masai Mara reserve, Kenya

Nick Garbutt / Warthogs grazing on knees {Phacochoerus aethiopicus} Hwange NP Zimbabwe

Pete Oxford / Buddhist monks kneeling at temple, one turning round, Ganlanba, Yunnan, China

Anup Shah / Warthog and young foraging {Phacochoerus aethiopicus} Masai Mara GR, Kenya

Anup Shah / Warthog male kneeling {Phacochoerus aethiopicus} Masai Mara, Kenya

Anup Shah / Warthog family feeding {Phacochoerus aethiopicus} Masai Mara, Kenya

Flip Nicklin / Flip Nicklin with his underwater camera, Maui, Hawaii

Onne van der Wal / Bodyboarder kneeling the wave, Hawaii.