Juergen & Christine Sohns / Meerkat (Suricata suricatta) on alert, Tswalu Game Reserve, South Africa
00594291
Ralph Pace / Green Sea Turtle (Chelonia mydas), San Diego, California
00592998
Jeff Foott / Geyser spouting, Old Faithful, Yellowstone National Park, Wyoming
00583944
Sebastian Kennerknecht / South African Giraffe (Giraffa giraffa giraffa) juvenile at sunset, Greater Makalali Private Game Reserve, South Africa
00583426
Avijan Saha/ BIA / Asian Elephant (Elephas maximus) juvenile crossing road at night in headlight of car watched by people on the road, West Bengal, India
00579541
Paul Bertner / Rainforest at sunrise, Sani Lodge, Ecuador
00572233
Paul Bertner / Dead Leaf Katydid (Orophus tessellatus) camouflaged in leaf litter, Hitoy Cerere Biological Reserve, Costa Rica
00571951
Paul Bertner / Looper Moth (Geometridae) caterpillar, Bukit Barisan Selatan National Park, Sumatra, Indonesia
00565926
Chien Lee / Graceful Madagascar Ground Gecko (Paroedura gracilis), Marojejy National Park, Madagascar
00558242
Donald M. Jones / White-tailed Deer (Odocoileus virginianus) buck, central Montana
01528362
Eric Baccega / Angolan giraffes (Giraffa camelopardalis angolensis) and black rhinoceros (Diceros bicornis) reflecting in waterhole at sunset, Okaukuejo, Etosha National Park, Namibia, Africa
00550876
Cyril Ruoso / Longhorn Beetle (Cerambycidae), Pacaya Samiria National Park, Peru
01475359
Sam Hobson / Fallow deer (Dama dama) buck crossing road under street lights. London, UK. January.
00539050
Sean Crane / Polar Bear (Ursus maritimus) at sunrise, Hudson Bay, Seal River, Manitoba, Canada
00538365
Vincent Grafhorst / Hippopotamus (Hippopotamus amphibius) flapping ears, Botswana
00538336
Roland Seitre / African Wild Dog (Lycaon pictus) running, native to Africa
01461020
David Pattyn / Silhouette of Common peafowl (Pavo cristatus) perched in a tree at dawn. Keoladeo Ghana National Park, Bharatpur, Rajasthan, India.
01453406
Eric Medard / Grey heron (Ardea cinerea) at night, taken with infra-red, Mayenne, Pays de la Loire, France, September.
01453373
Eric Medard / Feral cat (Felis catus) at night, taken with infra-red remote camera trap, France, November.
00522093
Thomas Marent / Golden Snub-nosed Monkey (Rhinopithecus roxellana) young, Qinling Mountains, Shaanxi, China
01423904
Milan Radisics / Ducks silhouetted at night on Heroes Square, Budapest, July 2009
00517977
Flip Nicklin / Humpback Whale (Megaptera novaeangliae) group gulp feeding, Auke Bay, Juneau, Alaska
01422086
Ernie Janes,Ernie Janes / Fallow deer (Dama dama) crossing rural road through Berkhamsted Common at dusk, Hertfordshire, UK, December
00481094
Donald M. Jones / Common Loon (Gavia immer) stretching wings, Troy, Montana
00429585
Kevin Schafer / Amazon River Dolphin (Inia geoffrensis) pair swimming in Ariau River, tributary of Rio Negro, Amazonia, Brazil
00425256
Vincent Grafhorst / Southern Giraffe (Giraffa giraffa) silhouetted against the setting sun, Lethiau Valley, Central Kalahari Game Reserve, Botswana
00420119
Konrad Wothe / Camargue Horse (Equus caballus) group running at sunset, Camargue, France
Michio Hoshino / Grizzly Bear (Ursus arctos horribilis) shaking off water after a bath, Alaska
00630048
Richard Du Toit / Springbok (Antidorcas marsupialis) grazing under tree, Kalahari Gemsbok Park, South Africa
00110814
Jim Brandenburg / Gemsbok (Oryx gazella) running across sand dune, Namib Desert, Namibia
00113742
Mitsuaki Iwago / African Lion (Panthera leo) mother with cub at dawn, Serengeti National Park, Tanzania
00202221
Gerry Ellis / Whistling Thorn (Acacia drepanolobium) tree over savannah, Masai Mara National Reserve, Kenya
00115075
Mitsuaki Iwago / African Lion (Panthera leo) cubs playing, Serengeti National Park, Tanzania
00600012
Matthias Breiter / Grizzly Bear (Ursus arctos horribilis) cubs silhouetted against water at sunrise, Katmai National Park, Alaska
00173642
Tim Fitzharris / Sunrise over Granadier Range, Molas Pass, Weminuche Wilderness, Colorado
00174948
Tim Fitzharris / Bald Cypress (Taxodium distichum) grove in freshwater swamp at dawn, Lake Fausse Pointe, Louisiana
00172402
Tim Fitzharris / Black-tailed Jackrabbit (Lepus californicus) western North America
00977178
Norbert Wu / California Sea Lion (Zalophus californianus) playing in shallow water, Channel Islands, California
00114382
Jim Brandenburg / Inuits dog sledding in midnight sun, Ellesmere Island, Nunavut, Canada
00072444
Jim Brandenburg / American Bison (Bison bison) herd grazing on prairie at sunset, South Dakota
00085242
Flip Nicklin / Giant Kelp (Macrocystis pyrifera) forest, Channel Islands National Park, California
00109272
Jim Brandenburg / Arctic Wolf (Canis lupus) portrait, Ellesmere Island, Nunavut, Canada
00162105
Mitsuhiko Imamori / Honeypot Ant (Camponotus inflatus) repletes hanging from ceiling of larder, engorged with nectar they will regurgitate on demand to other workers, central Australia
00125616
Jim Brandenburg / Coniferous forest backlit at dawn, Minnesota
00077639
Michio Hoshino / Grizzly Bear (Ursus arctos horribilis) mother and cubs in autumn grass, Alaska
00110874
Jim Brandenburg / Arctic Wolf (Canis lupus) trio at sunset, Ellesmere Island, Nunavut, Canada
00109278
Michio Hoshino / Caribou (Rangifer tarandus) group crossing through river during migration, Alaska
00108378
Michio Hoshino / Polar Bear (Ursus maritimus) mother and two cubs, Churchill, Manitoba, Canada
00127736
Mark Moffett / Carpenter Ant (Camponotus schmtzi) on tendril of host Pitcher Plant (Nepenthes bicalcarata), Borneo, Malaysia
00162113
Mitsuhiko Imamori / Honeypot Ant (Camponotus inflatus) repletes hanging from ceiling of larder, engorged with nectar they will regurgitate on demand to other workers, central Australia
00598600
Jami Tarris / Polar Bear (Ursus maritimus) feeding on Bearded Seal (Erignathus barbatus) kill, Spitsbergen, Svalbard, Norway
00598520
Juergen & Christine Sohns / African Lion (Panthera leo) sub-adult males, Mountain Zebra National Park, South Africa
00598497
Juergen & Christine Sohns / Meerkat (Suricata suricatta) on alert, Tswalu Game Reserve, South Africa
00596268
Jeff Foott / California Poppy (Eschscholzia californica) flowers, super bloom, Antelope Valley, California
Winfried Wisniewski / African Lion (Panthera leo) male at sunrise, Masai Mara, Kenya
01622741
Marie Read / Red-winged blackbird (Agelaius phoeniceus) male calling and displaying, backlit, showing steamy breath on a chilly spring morning, Ithaca, New York, USA, April.
00594290
Ralph Pace / Green Sea Turtle (Chelonia mydas), San Diego, California
00593893
Martin van Lokven / Cheetah (Acinonyx jubatus) mother with cub, Ngorongoro Conservation Area, Tanzania
00594007
Cyril Ruoso / Ring-tailed Lemur (Lemur catta) young playing, Anja Park, Madagascar
00593385
Ralph Pace / Pacific Sea Nettle (Chrysaora fuscescens) jellyfish, Monterey Bay, California
00593384
Ralph Pace / Pacific Sea Nettle (Chrysaora fuscescens) jellyfish, Monterey Bay, California
Heike Odermatt / Minden / Andalusian Horse (Equus caballus) in bridle, Netherlands
00584764
Andrew Peacock / Common Hartebeest (Alcelaphus buselaphus) herd at sunrise, Ol Pejeta Conservancy, Kenya
00583943
Sebastian Kennerknecht / South African Giraffe (Giraffa giraffa giraffa) male browsing on Acacia (Acacia sp) tree at sunset, Greater Makalali Private Game Reserve, South Africa
00582062
Sergey Gorshkov / Wolf (Canis lupus) in forest, Tver, Russia
00581882
Sergey Gorshkov / Sable (Martes zibellina) on branch in winter, Lake Baikal, Barguzinsky Nature Reserve, Russia
00580079
Mark Raycroft / White-tailed Deer (Odocoileus virginianus) buck in grassland at sunrise, North America
00579062
Donald M. Jones / Snowy Egret (Egretta thula), in breeding plume, preening, central Florida
00579061
Donald M. Jones / Snowy Egret (Egretta thula) preening, central Florida
00577945
Anup Shah / Thomson's Gazelle (Eudorcas thomsonii) pair and Blue Wildebeests (Connochaetes taurinus) at sunrise, Masai Mara, Kenya
00577925
Anup Shah / Burchell's Zebra (Equus burchellii) trio at sunrise, Masai Mara, Kenya
00576837
Thomas Hinsche/ BIA / Eurasian Hoopoe (Upupa epops) with food for chick at nest cavity, Saxony-Anhalt, Germany
00575973
Willi Rolfes/ BIA / Common Crane (Grus grus) flock flying in front of moon, Mecklenburg-Vorpommern, Germany
00575432
Hiroya Minakuchi / Weaver (Ploceidae) nests at sunrise, Samburu National Park, Kenya
00575034
Tui De Roy / Gentoo Penguin (Pygoscelis papua) chick begging for food from parent, Volunteer Beach, East Falkland Island, Falkland Islands
00575017
Tui De Roy / Gentoo Penguin (Pygoscelis papua) carrying nesting material, Dunbar Island, Falkland Islands
00572498
Paul Bertner / Katydid (Vestria sp), Danum Valley Conservation Area, Sabah, Borneo, Malaysia
00572305
Paul Bertner / Fungus (Hymenopellis sp) mushroom, Yasuni National Park, Ecuador
00572230
Paul Bertner / Acanaloniid Planthopper (Acanaloniidae), Udzungwa Mountains National Park, Tanzania
00572054
Paul Bertner / Cicada husk, Gunung Leuser National Park, Sumatra, Indonesia
00571958
Paul Bertner / Flatid Planthopper (Flatidae), Nyungwe Forest, Rwanda
00571270
Sebastian Kennerknecht / Guanaco (Lama guanicoe) in pre-andean shrubland, Torres del Paine, Torres del Paine National Park, Patagonia, Chile