Morley Read / Slow motion clip of a Leaf frog (Cruziohyla craspedopus) walking, Ecuador. (non-ex)

Jami Tarris / Walrus (Odobenus rosmarus) bull, Spitsbergen, Svalbard, Norway

Juergen & Christine Sohns / African Lion (Panthera leo) male drinking at waterhole, Tswalu Game Reserve, South Africa

Fiona Rogers / Eastern Chimpanzee (Pan troglodytes schweinfurthii) twenty year old male, named Titan, Gombe National Park, Tanzania

Fiona Rogers / Eastern Chimpanzee (Pan troglodytes schweinfurthii) twenty-five year old female, named Tanga, Gombe National Park, Tanzania

Fiona Rogers / Eastern Chimpanzee (Pan troglodytes schweinfurthii) four year old infant male, named Gizmo, Gombe National Park, Tanzania

Fiona Rogers / Eastern Chimpanzee (Pan troglodytes schweinfurthii) eighteen year old male, named Sampson, Gombe National Park, Tanzania

Fiona Rogers / Eastern Chimpanzee (Pan troglodytes schweinfurthii) four year old infant male, named Gizmo, Gombe National Park, Tanzania

Oliver Wright / Four-spotted chaser (Libellula quadrimaculata) resting on stem, covered in early morning dew. Skipwith Common National Nature Reserve, North Yorkshire, England, UK. May. Focus stacked image.

Chris Mattison / Common wasp (Vespula vulgaris) feeding on bread and jam. Monmouthshire, Wales, UK. March.

Andy Rouse / Bengal tiger (Panthera tigris) male, sub-adult aged three years, face portrait. Ranthambhore National Park, India.

Shane Gross / Caribbean reef shark (Carcharhinus perezi), two from below, one close up. Caribbean Sea off Gardens of the Queen National Park, Cuba.

Jordi Chias / Antarctic fur seal (Arctocephalus gazella), Antarctic Peninsula, Antarctica.

Suzi Eszterhas / Leopard (Panthera pardus) fur, Jao Reserve, Botswana

Suzi Eszterhas / Leopard (Panthera pardus) six-week-old cub nursing, Jao Reserve, Botswana

Suzi Eszterhas / Leopard (Panthera pardus) mother playing with her six-week-old cub, Jao Reserve, Botswana

Yashpal Rathore / Bengal tiger (Panthera tigris tigirs) tigress, stopping due to sound from camera while patrolling, Kanha National Park, Central India. Camera trap image.

Espen Bergersen / Aerial shot of a Humpback whale (Megaptera novaeangliae) swimming showing belly, Troms, Norway, January.

Willi Rolfes/ BIA / European Wolf (Canis lupus), Lower Saxony, Germany

Marion Vollborn/ BIA / Polar Bear (Ursus maritimus), Svalbard, Norway

Staffan Widstrand / Golden eagle (Aquila chrysaetos) in flight over snow. Kalvtrask, Vasterbotten, Lapland, Sweden. January.

Flip Nicklin / Humpback Whale (Megaptera novaeangliae) tail slapping at sunrise, Lahaina, Maui, Hawaii

Stefan Christmann / Emperor penguin (Aptenodytes forsteri) brooding chick aged 1-3 weeks, portrait. Atka Bay, Antarctica. August.

Stefan Christmann / Emperor penguin (Aptenodytes forsteri) chick aged six to eight weeks sheltering on parent's feet, portrait. Atka Bay, Antarctica. September.

Stefan Christmann / Emperor penguin (Aptenodytes forsteri) chick aged six to eight weeks stretching whilst on brooding parent's feet. Adult looking down at chick. Atka Bay, Antarctica. September.

Sven Zacek / Honey bee (Apis mellifera), two frozen on pond ice after flying out too early. Valgamaa, Southern Estonia. March.

Anup Shah / African elephant (Loxodonta africana) close up of leag approaching - remote camera. Masai Mara National Reserve, Kenya. August 2015.

Doug Gimesy / Platypus (Ornithorhynchus anatinus), released onto a log in Little Yarra River, Yarra junction, Victoria, Australia. Photographed under controlled conditions. April 2018.

Paul Hobson / Spoonbill (Platalea leucorodia) preening, close up. Hungary. May.

Thomas Marent / Buckley's Slender-legged Treefrog (Osteocephalus buckleyi), Putumayo, Colombia

Ingo Arndt / Mountain Lion (Puma concolor), Torres del Paine National Park, Patagonia, Chile

Ingo Arndt / Mountain Lion (Puma concolor), Torres del Paine National Park, Patagonia, Chile

Ingo Arndt / Royal Flycatcher (Onychorhynchus coronatus) in defensive posture, Santa Rosa National Park, Costa Rica

Ingo Arndt / Royal Flycatcher (Onychorhynchus coronatus) in defensive posture, Santa Rosa National Park, Costa Rica

Marion Vollborn/ BIA / Cheetah (Acinonyx jubatus) cub, Castile-La Mancha, Spain

Anup Shah / Olive Baboon (Papio anubis) curious male investigating camera, Masai Mara, Kenya

Anup Shah / African Elephant (Loxodonta africana) smelling, Masai Mara, Kenya

Hiroya Minakuchi / Southern Right Whale (Eubalaena australis) sailing at sunset, Peninsula Valdez, Argentina

Winfried Wisniewski / Hippopotamus (Hippopotamus amphibius) in territorial display, Mkhuze Game Reserve, KwaZulu-Natal, South Africa

Remi Masson / Shoal of Nase (Chondrostoma nasus) spawning, River Ain, Rhone-Alpes, France, April.

Yva Momatiuk & John Eastcott / Minden / Atlantic Puffin (Fratercula arctica), Latrabjarg, Westfjords, Iceland

Ralph Martin/ BIA / Oldworld Swallowtail (Papilio machaon) wing, Baden-Wurttemberg, Germany

Steve Downer / Green tiger beetle (Cicindela campestrus) feeding on caterpillar, UK, June.

Jim Manthorpe / American bison (Bison bison) feeding, Yellowstone National Park, Wyoming, USA, August.

Jami Tarris / Japanese Macaque (Macaca fuscata) in hot spring, Jigokudani, Nagano, Japan

Robert Thompson / Elephant hawk moth (Deilephila elpenor) portrait, Brackagh Moss National Nature Reserve, Portadown, County Armagh, Northern Ireland. April.

Tim Fitzharris / Sumatran Orangutan (Pongo abelii) male, native to Sumatra

Tui De Roy / Blue-footed Booby (Sula nebouxii) feet, Seymour Island, Galapagos Islands, Ecuador

Tui De Roy / Blue-footed Booby (Sula nebouxii) incubating eggs, Santa Cruz Island, Galapagos Islands, Ecuador

Ross Hoddinott / Two small pearl-bordered fritillary butterflies (Boloria selene) resting on bluebell, Marsland mouth, North Devon, UK. May 2017.

Ross Hoddinott / Emerald damselfly (Lestes sponsa), female resting, Broxwater, Cornwall, UK. August

Ross Hoddinott / Common blue butterflies (Polyommatus icarus) resting on grasses, Vealand Farm, Devon, UK. June 2017

Tui De Roy / Galapagos Lava Lizard (Microlophus albemarlensis) on Marine Iguana (Amblyrhynchus cristatus), Punta Espinosa, Fernandina Island, Galapagos Islands, Ecuador

Paul Bertner / Blue-legged Chameleon (Calumma crypticum) curled tail, Ranomafana National Park, Madagascar

James Dunbar / Close up of a Cryptic mantis (Sibylla pretiosia) catching and eating a fruit fly, UK. Captive.

Steve Downer / Newly hatched slug (Gastropoda) approaching a water droplet on a leaf before bursting it and retracting its eyestalks, Birmingham, England, UK. Controlled conditions.

Steve Downer / Desert locust (Schistocerca gregaria) feeding on grass, controlled conditions.

SCOTLAND: The Big Picture / Close up of a Red deer (Cervus elaphus) stag feeding in snow, Cairngorms National Park, Scotland, UK, February.

SCOTLAND: The Big Picture / Mountain hare (Lepus timidus) in a freshly dug snow hole, Cairngorms National Park, Scotland, UK, December.

Nick Upton / Close up view of a Marbled white butterfly (Melanargia galathea) nectaring on a Field scabious (Knautia arvensis) flower, with another trying to court with it, Wiltshire, England, UK, July.

Konrad Wothe / Three-striped poison frog (Ameerega trivittata) croaking, Panguana Reserve, Huanuco Region, Peru.

Tui De Roy / Galapagos hawk (Buteo galapagoensis) in flight, Galapagos, Ecuador. Vulnerable species.

David Pattyn / Great crested grebe (Podiceps cristatus) close-up in breeding plumage. The Netherlands.June 2014

Frederique Olivier / Adelie penguin (Pygoscelis adeliae) regurgitating food for its chick, Antarctica.

Sue Daly / Close up of a Plaice (Pleuronectes platessa), swims away, Sark, British Channel Islands, UK, June.

Ingo Arndt / American Crocodile (Crocodylus acutus) swimming in open ocean, Pacific Coast, Ostional, Costa Rica

Ingo Arndt / Grizzly bear (Ursus arctos horribilis) picture taken with a remote camera car, Alaska, July.

Ingo Arndt / Grizzly bear (Ursus arctos horribilis) silhouette, Lake Clark National Park, Alaska

Ingo Arndt / Great Bowerbird (Chlamydera nuchalis) male at courting bower, Litchfield National Park, Australia.

Ingo Arndt / Male Vogelkop Bowerbird (Amblyornis inornatus) constructing bower roof. Arfak Mountains, West Papua, Indonesia.

Ingo Arndt / Grizzly bear (Ursus arctos horribilis) portrait, Lake Clark National Park, Alaska, USA, September.

Ingo Arndt / Glaucous winged gull (Larus glaucescens) calling, Lake Clark National Park, Alaska, USA, August

Ingo Arndt / Kingfisher (Alcedo atthis) leaving water after successfully catching a fish, Hessen, Germany, sequence 9/9

Ingo Arndt / Kingfisher (Alcedo atthis) diving into water to catch a fish, Hessen, Germany, sequence 7/9

Ingo Arndt / Intermediate Egret (Egretta intermedia) Kakadu National Park, Northern Territory, Australia, December

Ingo Arndt / Rear view of Horseshoe crab (Limulus polyphemus) with trail in sand, Delaware Bay, Delaware, USA, May

Ingo Arndt / Mosquito (Culicidae) egg faft floating on surface of water, Germany

Ingo Arndt / Quiver Tree (Aloe dichotoma), Namib Desert, Namibia.

Tony Wu / Humpback whale (Megaptera novaeangliae) adult female at rest. The tubercles on the whale's head are clearly visible, as are the barnacles (Coronula diadema), whale lice (Cyamus boopis), and hairs on t...

Thomas Marent / Bonobo (Pan paniscus) staring, native to central Africa

Glenn Bartley/ BIA / Saffron Toucanet (Baillonius bailloni), Atlantic Rainforest, Brazil

Alain Ghignone/ BIA / Eurasian Wryneck (Jynx torquilla) calling, Aosta Valley, Italy

Nick Saunders/ BIA / Sharp-shinned Hawk (Accipiter striatus) juvenile, Saskatchewan, Canada

Ann & Steve Toon / Arctic tern (Sterna paradisaea) with sandeel. Inner Farne, Northumberland, UK. July.

Steve Gettle / Green Darner (Anax junius) dragonfly, North America

Mark Hamblin / Brown hare (Lepus europaeus) adult in arable field, Scotland, August.

Mark Hamblin / Brown hare (Lepus europaeus) close-up portrait of adult , Scotland, UK. August.

Lorraine Bennery / Knapweed fritillary butterflies (Melitaea phoebe) on Green winged orchid (Anacamptis morio), Grands Causses Regional Natural Park, France, May.

Fiona Rogers / Eastern Chimpanzee (Pan troglodytes schweinfurthii) mother, twenty-three years old, holding less than one day old newborn, Gombe National Park, Tanzania

Claudio Contreras / American crocodile (Crocodylus acutus) rear view of animal resting in shallow water, close up of tail, Banco Chinchorro Biosphere Reserve, Caribbean region, Mexico

Richard Du Toit / Black Wildebeest (Connochaetes gnou), Rietvlei Nature Reserve, South Africa

Nick Hawkins / Ocelot (Leopardus pardalis) portrait. camera trap image, Nicoya Peninsula, Costa Rica.

Carol Walker / Wild Mustang horse rearing, Pryor mountains, Montana, USA. June.

Danny Green / Caribou / Reindeer bull (Rangifer tarandus) close-up grazing, Denali National Park, Alaska, USA, September

Solvin Zankl / Flatfish (Bothidae sp) larva, Atlantic Ocean off Cape Verde. Captive.

Chris & Monique Fallows / Great white shark (Carcharodon carcharias) split level view, New Zealand, March.