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Juvenile Timber rattlesnakes (Crotalus horridus) massed together at nest site, Pennsylvania, USA. - John Cancalosi
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John Cancalosi / Juvenile Timber rattlesnakes (Crotalus horridus) massed together at nest site, Pennsylvania, USA.
Timber rattlesnakes (Crotalus horridus) at nest site with young, Pennsylvania, USA. - John Cancalosi
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John Cancalosi / Timber rattlesnakes (Crotalus horridus) at nest site with young, Pennsylvania, USA.
Corn snake (Pantherophis guttatus) young hatching, captive. Maryland, USA. - John Cancalosi
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John Cancalosi / Corn snake (Pantherophis guttatus) young hatching, captive. Maryland, USA.
Moose (Alces alces), calves near house in winter, Jokkmokk, Sweden, February. - Erlend Haarberg
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Erlend Haarberg / Moose (Alces alces), calves near house in winter, Jokkmokk, Sweden, February.
Leucistic white lions (Panthera leo krugeri) male and juveniles, Captive. - Philippe Clement
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Philippe Clement / Leucistic white lions (Panthera leo krugeri) male and juveniles, Captive.
Mute swan (Cygnus olor) parents and cygnets on a misty lake at sunrise. London, UK. May - Oscar Dewhurst
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Oscar Dewhurst / Mute swan (Cygnus olor) parents and cygnets on a misty lake at sunrise. London, UK. May
Mute swan (Cygnus olor) parent and cygnets swimming. London, UK. May - Oscar Dewhurst
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Oscar Dewhurst / Mute swan (Cygnus olor) parent and cygnets swimming. London, UK. May
Mute swan (Cygnus olor) cygnets and parents swimming. London, UK. May - Oscar Dewhurst
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Oscar Dewhurst / Mute swan (Cygnus olor) cygnets and parents swimming. London, UK. May
Emperor penguin (Aptenodytes forsteri) two adults brooding chicks age 5 weeks, Antarctica. Highly commended in the Polar Passion Category of the Nature's Best Photography Awards 2019. - Stefan Christmann
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Stefan Christmann / Emperor penguin (Aptenodytes forsteri) two adults brooding chicks age 5 weeks, Antarctica. Highly commended in the Polar Passion Category of the Nature's Best Photography Awards 2019.
Northern gannet (Morus bassanus) colony, chick climbing back into nest, with the midnight sun, Norway, July - Ismaele Tortella
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Ismaele Tortella / Northern gannet (Morus bassanus) colony, chick climbing back into nest, with the midnight sun, Norway, July
Tracking shot of a Whooper swan (Cygnus cygnus) family walking, Lofoten, northern Norway, August. - Ismaele Tortella
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Ismaele Tortella / Tracking shot of a Whooper swan (Cygnus cygnus) family walking, Lofoten, northern Norway, August.
Golden jackal (Canis aureus) pup sitting on a grassy verge by a path, Danube Delta, Romania, July. - Andres M. Dominguez
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Andres M. Dominguez / Golden jackal (Canis aureus) pup sitting on a grassy verge by a path, Danube Delta, Romania, July.
Three juvenile Golden jackal (Canis aureus) pups running across a path, Danube Delta, Romania, July. - Andres M. Dominguez
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Andres M. Dominguez / Three juvenile Golden jackal (Canis aureus) pups running across a path, Danube Delta, Romania, July.
Black rhinoceros (Diceros bicornis) mother and calf, Lewa & Borana Conservancy, Kenya. - Will Burrard-Lucas
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Will Burrard-Lucas / Black rhinoceros (Diceros bicornis) mother and calf, Lewa & Borana Conservancy, Kenya.
White rhino (Ceratotherium simum) female and juvenile, Solio Game Reserve, Solio Ranch, Kenya. Taken with remote camera buggy / BeetleCam. - Will Burrard-Lucas
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Will Burrard-Lucas / White rhino (Ceratotherium simum) female and juvenile, Solio Game Reserve, Solio Ranch, Kenya. Taken with remote camera buggy / BeetleCam.
White rhinoceroses (Ceratotherium simum) with calf playing with adult, Solio Game Reserve, Solio Ranch, Kenya. Taken with remote camera buggy / BeetleCam. - Will Burrard-Lucas
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Will Burrard-Lucas / White rhinoceroses (Ceratotherium simum) with calf playing with adult, Solio Game Reserve, Solio Ranch, Kenya. Taken with remote camera buggy / BeetleCam.
Humpback whale (Megaptera novaeangliae) calf riding on mother's head. Near Nomuka Island, Ha'apai Islands, Tonga. - Doug Perrine
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Doug Perrine / Humpback whale (Megaptera novaeangliae) calf riding on mother's head. Near Nomuka Island, Ha'apai Islands, Tonga.
Puma (Puma concolor puma) young male standing with mouth open. Estancia Amarga, near Torres del Paine National Park, Patagonia, Chile. December. - Nick Garbutt
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Nick Garbutt / Puma (Puma concolor puma) young male standing with mouth open. Estancia Amarga, near Torres del Paine National Park, Patagonia, Chile. December.
Sumatran pit viper (Trimeresurus sumatranus) juvenile on tree trunk, in tropical rainforest. Danum Valley, Sabah, Borneo, Malaysia. - Nick Garbutt
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Nick Garbutt / Sumatran pit viper (Trimeresurus sumatranus) juvenile on tree trunk, in tropical rainforest. Danum Valley, Sabah, Borneo, Malaysia.
Ringed seal (Pusa hispida) and pup resting on ice. Svalbard, Norway. April. - Danny Green
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Danny Green / Ringed seal (Pusa hispida) and pup resting on ice. Svalbard, Norway. April.
Polar bear (Ursus maritimus) female and cubs play fighting. Svalbard, Norway, March 2018. - Danny Green
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Danny Green / Polar bear (Ursus maritimus) female and cubs play fighting. Svalbard, Norway, March 2018.
Polar bear (Ursus maritimus) group on ice, female and cubs feeding on Whale carcass. Svalbard, Norway, June 2018. - Danny Green
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Danny Green / Polar bear (Ursus maritimus) group on ice, female and cubs feeding on Whale carcass. Svalbard, Norway, June 2018.
Polar bear (Ursus maritimus), two cubs playing, leaping across sea ice, reflected in water. Svalbard, Norway, July. - Danny Green
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Danny Green / Polar bear (Ursus maritimus), two cubs playing, leaping across sea ice, reflected in water. Svalbard, Norway, July.
Polar bear (Ursus maritimus), two cubs walking on sea ice. Svalbard, Norway, July. - Danny Green
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Danny Green / Polar bear (Ursus maritimus), two cubs walking on sea ice. Svalbard, Norway, July.
Polar bear (Ursus maritimus) cub ready to jump down from pack ice. Svalbard, Norway, April. - Danny Green
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Danny Green / Polar bear (Ursus maritimus) cub ready to jump down from pack ice. Svalbard, Norway, April.
Polar bear (Ursus maritimus) female resting with cubs on glacier. Svalbard, Norway, July. - Danny Green
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Danny Green / Polar bear (Ursus maritimus) female resting with cubs on glacier. Svalbard, Norway, July.
Polar bear (Ursus maritimus) and two cubs feeding on Whale carcass. Svalbard, Norway, July. - Danny Green
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Danny Green / Polar bear (Ursus maritimus) and two cubs feeding on Whale carcass. Svalbard, Norway, July.
Polar bear (Ursus maritimus) and cubs, standing on sea ice. Svalbard, Norway, July. - Danny Green
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Danny Green / Polar bear (Ursus maritimus) and cubs, standing on sea ice. Svalbard, Norway, July.
Polar bear (Ursus maritimus) and cubs resting on sea ice. Svalbard, Norway, July. - Danny Green
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Danny Green / Polar bear (Ursus maritimus) and cubs resting on sea ice. Svalbard, Norway, July.
Polar bear (Ursus maritimus) female and cubs, one cub walking up slope of ice in foreground. Svalbard, Norway, July. - Danny Green
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Danny Green / Polar bear (Ursus maritimus) female and cubs, one cub walking up slope of ice in foreground. Svalbard, Norway, July.
Polar bear (Ursus maritimus) and cubs feeding on Whale carcass. Svalbard, Norway, July. - Danny Green
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Danny Green / Polar bear (Ursus maritimus) and cubs feeding on Whale carcass. Svalbard, Norway, July.
Polar bear (Ursus maritimus) and cubs feeding on Whale carcass, on iceberg. Svalbard, Norway, July 2018. - Danny Green
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Danny Green / Polar bear (Ursus maritimus) and cubs feeding on Whale carcass, on iceberg. Svalbard, Norway, July 2018.
RF - Polar bear (Ursus maritimus) cub walking in snow. Svalbard, Norway, April. (This image may be licensed either as rights managed or royalty free.) - Danny Green
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Danny Green / RF - Polar bear (Ursus maritimus) cub walking in snow. Svalbard, Norway, April. (This image may be licensed either as rights managed or royalty free.)
Mute swan (Cygnus olor), two cygnets sheltering under parent's wing. Richmond Park, London, England, UK. April. - Oscar Dewhurst
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Oscar Dewhurst / Mute swan (Cygnus olor), two cygnets sheltering under parent's wing. Richmond Park, London, England, UK. April.
Mute swan (Cygnus olor) swimming with cygnets in misty lake in morning light. Richmond Park, London, England, UK. May. - Oscar Dewhurst
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Oscar Dewhurst / Mute swan (Cygnus olor) swimming with cygnets in misty lake in morning light. Richmond Park, London, England, UK. May.
Dugong (Dugong dugon) male and juvenile Golden trevally (Gnathanodon speciosus) swimming over Seagrass (Halophila stipulacea) meadow. Marsa Nabaa, Marsa Alam, Egypt. - Alex Mustard
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Alex Mustard / Dugong (Dugong dugon) male and juvenile Golden trevally (Gnathanodon speciosus) swimming over Seagrass (Halophila stipulacea) meadow. Marsa Nabaa, Marsa Alam, Egypt.
Green turtle (Chelonia mydas) resting on sea floor and two juvenile Golden trevally (Gnathanodon speciosus). Marsa El Shouna, Marsa Alam, Egypt. - Alex Mustard
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Alex Mustard / Green turtle (Chelonia mydas) resting on sea floor and two juvenile Golden trevally (Gnathanodon speciosus). Marsa El Shouna, Marsa Alam, Egypt.
Guanaco (Lama guanicoe) female and newborn baby, nose to nose in grassland. La Pampa Province, Argentina. - Gabriel Rojo
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Gabriel Rojo / Guanaco (Lama guanicoe) female and newborn baby, nose to nose in grassland. La Pampa Province, Argentina.
California condor (Gymnogyps californianus), two perched in tree, adult and juvenile. California condor recovery program, Sierra de San Pedro Martir National Park, Baja California Peninsula, Mexico. - Claudio  Contreras
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Claudio Contreras / California condor (Gymnogyps californianus), two perched in tree, adult and juvenile. California condor recovery program, Sierra de San Pedro Martir National Park, Baja California Peninsula, Mexico.
Emperor penguin (Aptenodytes forsteri) egg hatching on father's feet. Atka Bay, Antarctica. August. Winner of the Portfolio category of the Wildlife Photographer of the Year Awards 2019. - Stefan Christmann
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Stefan Christmann / Emperor penguin (Aptenodytes forsteri) egg hatching on father's feet. Atka Bay, Antarctica. August. Winner of the Portfolio category of the Wildlife Photographer of the Year Awards 2019.
Emperor penguin (Aptenodytes forsteri) chick looking upwards to parents beak. Atka Bay, Antarctica. August. Winner of the Portfolio category of the Wildlife Photographer of the Year Awards 2019. - Stefan Christmann
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Stefan Christmann / Emperor penguin (Aptenodytes forsteri) chick looking upwards to parents beak. Atka Bay, Antarctica. August. Winner of the Portfolio category of the Wildlife Photographer of the Year Awards 2019.
Red fox (Vulpes vulpes) cub defending its kill (a large dead Brown rat (Rattus norvegicus)) from another cub, North London, UK. August. - Matthew Maran
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Matthew Maran / Red fox (Vulpes vulpes) cub defending its kill (a large dead Brown rat (Rattus norvegicus)) from another cub, North London, UK. August.
Slow motion clip of a Mute swan (Cygnus olor) with three cygnets, Cornwall, England, UK, May. - Morley Read
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Morley Read / Slow motion clip of a Mute swan (Cygnus olor) with three cygnets, Cornwall, England, UK, May.
Close-up of Agua rica leaf frog (Phyllomedusa ecuatoriana) eggs after 18 days development, the tadpoles are fully developed and ready to hatch, Ecuador. Endangered. - Morley Read
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Morley Read / Close-up of Agua rica leaf frog (Phyllomedusa ecuatoriana) eggs after 18 days development, the tadpoles are fully developed and ready to hatch, Ecuador. Endangered.
Close-up of Agua rica leaf frog (Phyllomedusa ecuatoriana) eggs after 11 days development, showing beating heart and blood flowing over gills, Ecuador. Endangered. - Morley Read
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Morley Read / Close-up of Agua rica leaf frog (Phyllomedusa ecuatoriana) eggs after 11 days development, showing beating heart and blood flowing over gills, Ecuador. Endangered.
Juvenile Goldenrod spider (Misumena vatia) camouflaged on a Common hogweed (Heracleum sphondylium) flowerhead, reacting to and catching a fly (Muscidae), Wiltshire, England, UK, June. - Nick Upton
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Nick Upton / Juvenile Goldenrod spider (Misumena vatia) camouflaged on a Common hogweed (Heracleum sphondylium) flowerhead, reacting to and catching a fly (Muscidae), Wiltshire, England, UK, June.
California sea lion (Zalophus californianus) pups in an underwater cave. Los Islotes, La Paz, Baja California Sur, Mexico. Sea of Cortez, Gulf of California, East Pacific Ocean. - Alex Mustard
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Alex Mustard / California sea lion (Zalophus californianus) pups in an underwater cave. Los Islotes, La Paz, Baja California Sur, Mexico. Sea of Cortez, Gulf of California, East Pacific Ocean.
Captive reared juvenile White stork (Ciconia ciconia) in flight over the Knepp Estate soon after release, Sussex, UK, August 2019. - Nick Upton
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Nick Upton / Captive reared juvenile White stork (Ciconia ciconia) in flight over the Knepp Estate soon after release, Sussex, UK, August 2019.
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