Anup Shah / African Lion (Panthera leo) juvenile reaching out with curiosity, Masai Mara National Reserve, Kenya. March

Sandra Bartocha / European beech tree (Fagus sylvatica). in woodland, Serrahn, Muritz-National Park, World Natural Heritage site, Germany, Europe. October 2015.

Ole Jorgen Liodden / Polar bear (Ursus maritimus) standing on ice floe, looking at camera. Svalbard, Norway. August.

Joris van Alphen / Montagu's harrier (Circus pygargus) preparing to land at her nest, clasping a songbird. Viewed from below. Groningen, the Netherlands. July.

Anup Shah / African elephants (Loxodonta africana) gathering at a waterhole, wide angle view. Maasai Mara National Reserve, Kenya.

Anup Shah / Cheetah (Acinonyx jubatus) male juvenile aged about 18 months approaching a kill, wide angle view. Maasai Mara National Reserve, Kenya.

Anup Shah / Marabou storks (Leptoptilos crumeniferus) feeding on catfish in waterhole, wide angle view. Maasai Mara National Reserve, Kenya.

Anup Shah / African elephant (Loxodonta africana) walking toward camera, Maasai Mara National Reserve, Kenya.

Anup Shah / African elephants (Loxodonta africana) wallowing at a waterhole, wide angle view. Maasai Mara National Reserve, Kenya.

Andy Rouse / Galapagos land iguana (Conolophus subcristatus) feeding, Urbina Bay, Isabela Island, Galapagos.

Alex Hyde / Emperor moth (Saturnia pavonia) female wide angle view showing heather moorland habitat. Peak District National Park, UK. April.

Claudio Contreras / Boat on canal between chinampas, a wetland agricultural system. Xochimilco wetlands, Mexico City, September

Chris & Monique Fallows / Wandering albatross (Diomedea exulans), feeding and cleaning.

Andy Rouse / Bengal tiger (Panthera tigris) walking portrait, Ranthambhore National Park, India. Crop of image 01500288 Endangered species.

Ole Jorgen Liodden / Walrus (Odobenus rosmarus) underwater view, Edgeoya, Svalbard, Norway, June.

Steven Kazlowski / Polar bear (Ursus maritimus) curious young bear approaches over newly forming pack ice during autumn freeze up, Beaufort Sea, off Arctic coast, Alaska

Steven Kazlowski / Polar bear (Ursus maritimus) curious young bear approaching camera, over newly forming pack ice during autumn freeze up, Beaufort Sea, off Arctic coast, Alaska

John Waters / Barn Owl (Tyto alba) hunting/hovering, Somerset, UK, trained bird.

Aflo / Cat stretching forward whilst sunbathing, Hofu, Yamaguchi, Japan.

Frederique Olivier / Adelie penguins (Pygoscelis adeliae) wide angle portrait of two with larger group in background, Antarctica.

Ann & Steve Toon / Ground squirrel (Xerus inauris) Kgalagadi Transfrontier Park, Northern Cape, South Africa Non-ex.

Ann & Steve Toon / Ground squirrel (Xerus inauris) Kgalagadi Transfrontier Park, Northern Cape, South Africa. Non-ex.

Roland Seitre / Young Lion (Panthera leo) in tree, Fathala Reserve, Senegal. Captive, occurs in sub-Saharan Africa, Vulnerable species.

Sam Hobson / Young urban Red fox (Vulpes vulpes) standing in front of Bristol City Council dustbins. Bristol, UK, September.

Matthew Maran / Mute swans (Cygnus olor) Highgate Ponds, Hampstead Heath, London, UK, February.

Olga Kamenskaya / Man looking through transparent ice (1m thick) on lake surface to see diver below. Lake Baikal, Russia, March 2008. Model released.

Markus Varesvuo / Great Grey Owl (Strix nebulosa) hunting, Tornio, Finland, March

Jabruson / African Crake (Crecopsis egregia) portrait in long grass ,Mboko savannah-forest mozaic, Odzala-Kokoua National Park, Democratic Republic of Congo.

Jabruson / Mass emergence of rainforest Skipper butterflies (Melphina sp.) Lokoue Bai, Odzala-Kokoua National Park, Cuvette, Democratic Republic of Congo.

Ernie Janes / Hands holding ripe Barley ears (Hordeum vulgare) ready for harvest at Salthouse, Norfolk, England, UK, August.

Anup Shah / Spotted hyena (Crocuta crocuta) pup approaching with curiosity. Masai Mara National Reserve, Kenya. Taken with remote wide angle camera.

Anup Shah / Spotted hyena (Crocuta crocuta) approaching with curiosity. Masai Mara National Reserve, Kenya. Taken with remote wide angle camera.

Anup Shah / White-backed vultures (Gyps africanus) feeding on the carcass of a Common or Plains zebra. Masai Mara National Reserve, Kenya. Taken with remote wide angle camera.

Anup Shah / Lion (Panthera leo) cub aged about 2 years approaching with curiosity - remote wide angle perspective . Masai Mara National Reserve, Kenya. Taken with remote wide angle camera.

Anup Shah / African elephant (Loxodonta africana) close-up. Masai Mara National Reserve, Kenya. Taken with remote wide angle camera.

Anup Shah / Cape buffalo (Syncerus caffer) young male approaching with curiosity. Masai Mara Nationa Reserve, Kenya. Taken with remote wide angle camera.

Chris & Monique Fallows / Black browed albatros (Thalassarche melanophrys), Cape Point, South Africa.

David Pattyn / Dalmatian Pelican (Pelecanus crispus) group of pelicans with dark storm clouds approaching, Lake Kerkini, Greece, February

Steven Kazlowski / Polar bear (Ursus maritimus) curious young boar on the newly frozen pack ice reaches for remote camera with paw, Beaufort Sea, off the 1002 area of the Arctic National Wildlife Refuge, North Slope, Al...

Steven Kazlowski / Polar bear (Ursus maritimus) curious young male on the newly frozen pack ice, Beaufort Sea, off the 1002 area of the Arctic National Wildlife Refuge, North Slope, Alaska

Steven Kazlowski,Steven Kazlowski / Polar bear (Ursus maritimus) young bear in freezing water during autumn freeze up, Bernard Spit, 1002 area of the Arctic National Wildlife Refuge, North Slope, Alaska, Beaufort Sea

Claudio Contreras / View from bangka boat at dawn, Danajon Bank, Central Visayas, Philippines, April 2013

Ben Cranke,Ben Cranke / Japanese Macaque (Macaca fuscatata) juvenile, reaching out to touch the camera, Jigokudani, Nagano Prefecture, Honshu, Japan

David Tipling / Dalmatian Pelicans (Pelicanus crispus) being fed by fisherman at Lake Kerkini, Northern Greece, February

Anup Shah / Celebes / Black crested macaque (Macaca nigra) two juveniles approaching with curiosity, one grimacing Tangkoko National Park, Sulawesi, Indonesia.

Anup Shah / Celebes / Black crested macaque (Macaca nigra) group up close, watching with curiosity, Tangkoko National Park, Sulawesi, Indonesia.

Mark Taylor / German Shepherd Dog bitch pup, Coco, 14 weeks old, with raised paw.

Anup Shah / Western lowland gorilla (Gorilla gorilla gorilla) sub-adult female 'Mosoko' aged 8 years and juvenile male 'Mobangi' aged 5 years approaching with curiosity, Bai Hokou, Dzanga Sangha Special Dense For...

Bertie Gregory / Raccoon (Procyon lotor) standing up investigating camera, portrait, Stanley park, Vancouver, British Columbia, Cananda, September.

Nick Garbutt / Adult Fossa (Crytoprocta ferox) female investigating automatic remote camera in leaf-litter. Kirindy Forest, western Madagascar, November.

Steven Kazlowski / Polar bear (Ursus maritimus) curious adult investigates a remote camera along a hillside on Spitsbergen and the northwest coast of the Svalbard Archipelago, Norway, Greenland Sea, July

Doug Perrine / Young Steller's / Steller / Northern Sealions (Eumetopias jubatus) curiously approaching the photographer. Glacier Island, Columbia Bay, Alaska, USA, July.

Anup Shah / Bonobo (Pan paniscus) adolescent male reaching out from a tree, portrait, Lola Ya Bonobo Sanctuary, Democratic Republic of Congo. October.

Anup Shah / African lion (Panthera leo) three sub adults approaching remote camera with curiosity, Masai Mara National Reserve, Kenya. February

Anup Shah / African elephant (Loxodonta africana) group drinking from waterhole - wide angle perspective. Masai Mara National Reserve, Kenya. March

Anup Shah / Cape / African Buffalo (Syncerus caffer) approaching with curiosity, herd in the background, wide angle perspective, Masai Mara National Reserve, Kenya. September

Anup Shah / Cape / African Buffalo (Syncerus caffer) approaching camera with curiosity, wide angle perspective, Masai Mara National Reserve, Kenya. September

Anup Shah / Cheetah (Acinonyx jubatus) juvenile head portrait, low angle, Masai Mara National Reserve, Kenya. March

Anup Shah / African lioness (Panthera leo) portrait with male behind, Masai Mara National Reserve, Kenya. February

Anup Shah / Cheetah (Acinonyx jubatus).head portrait of juvenile peering curiously, wide angle perspective Masai Mara National Reserve, Kenya. March

Anup Shah / African Lioness (Panthera leo) and cubs curiously approaching, low angle, Masai Mara National Reserve, Kenya. February

Anup Shah / African lion (Panthera leo) male head portrait, at low angle, Masai Mara National Reserve, Kenya. December

Anup Shah / African lion (Panthera leo) portrait of cub, Masai Mara National Reserve, Kenya. August

Alex Mustard / split level view of a domestic pig (Sus domestica) bathing in the sea. Exuma Cays, Bahamas. Tropical West Atlantic Ocean. This family of pigs live on this beach in the Bahamas and enjoy swimming in t...

Alex Mustard / Split level of female California sea lions (Zalophus californianus) basking in the sun on the surface. La Paz, Baja California Mexico. Sea of Cortez, East Pacific Ocean. October

Anup Shah / African lion (Panthera leo) mature male approaching with curiosity, Maasai Mara National Reserve, Kenya, March

Anup Shah / African lion (Panthera leo) adolescent approaching with caution and curiosity, Maasai Mara National Reserve, Kenya, February

Anup Shah / Spotted hyena (Crocuta crocuta) approaching, Masai Mara National Reserve, Kenya, December

Anup Shah / Young Spotted hyena (Crocuta crocuta) approaching with curiosity, Masai Mara National Reserve, Kenya, September

Anup Shah / Inquisitive African lion (Panthera leo) cubs approaching with curiousity, Masai Mara National Reserve, Kenya, August

Wild Wonders of Europe / Widstra / Eurasian brown bear (Ursus arctos) close up of paw while investigating remote camera, Kuhmo, Finland, July 2008

Wild Wonders of Europe / Widstra / Eurasian brown bear (Ursus arctos) close up of nose while investigating remote camera, Kuhmo, Finland, July 2008

Wild Wonders of Europe / Widstra / Eurasian brown bear (Ursus arctos) close up of nose while investigates remote camera, Kuhmo, Finland, July 2008. WWE INDOOR EXHIBITION.

David Kjaer / Curious domestic cattle {Bos taurus} approaching the photographer, Somerset, UK

David Kjaer / Chalkhill blue (Lysandra coridon) pair mating, Wiltshire, UK

Richard Du Toit / Male Reticulated Giraffe (Giraffa camelopardalis) leaning forward. Ol Pejeta Conservancy, Laikipia County, Kenya.

Jeff Vanuga / View from kayak to woman in another kayak ahead, Shoshone Lake, Yellowstone National Park, Wyoming, USA, August 2014. Model released.

Jeff Vanuga / View from kayak to woman in another kayak ahead, Shoshone Lake, Yellowstone National Park, Wyoming, USA, August 2014. Model released.

Jeff Vanuga / Horseback riders riding Icelandic horses, Iceland. August 2014.

Jeff Vanuga / Horseback riders riding Icelandic horses across river, Iceland, August 2014.

Franco Banfi / Tiger shark (Galeocerdo cuvier) in front of the camera, Northern Bahamas, Caribbean Sea, Atlantic Ocean

Franco Banfi / Dusky grouper (Epinephelus marginatus) close up of face, Formigas Islet dive site, Azores, Portugal, Atlantic Ocean.

Franco Banfi / Cattle on Santa Maria Island, Azores, Portugal, Atlantic Ocean

Franco Banfi / Cattle on Santa Maria Island, Azores

Franco Banfi / Bull on Santa Maria Island, Azores, Portugal, Atlantic Ocean

Franco Banfi / Walrus (Odobenus rosmarus) Spitsbergen, Svalbard Archipelago, Norway, Arctic Ocean. July.

Anup Shah / African elephants (Loxodonta africana) gathering at a waterhole, wide angle view. Maasai Mara National Reserve, Kenya.

Anup Shah / African elephants (Loxodonta africana) gathering at a waterhole, wide angle view. Maasai Mara National Reserve, Kenya.

Anup Shah / African buffalo (Syncerus caffer) herd on the move, wide angle view. Maasai Mara National Reserve, Kenya.

Anup Shah / Cheetah (Acinonyx jubatus) male scent marking a tree, wide angle view. Maasai Mara National Reserve, Kenya.

Anup Shah / Cheetah (Acinonyx jubatus) male approaching a tree, wide angle view, Maasai Mara National Reserve, Kenya.