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    • Open Mouth
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Feral domestic rabbit (Oryctolagus cuniculus) standing on hind legs on coast, Okunojima Island, also known as Rabbit Island, Hiroshima, Japan.  -  Yukihiro  Fukuda
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Yukihiro Fukuda / Feral domestic rabbit (Oryctolagus cuniculus) standing on hind legs on coast, Okunojima Island, also known as Rabbit Island, Hiroshima, Japan.
Red fox (Vulpes vulpes) vixen yawning in the morning light (captive). Lifton, Devon, UK, May  -  Ross Hoddinott
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Ross Hoddinott / Red fox (Vulpes vulpes) vixen yawning in the morning light (captive). Lifton, Devon, UK, May
Female Anglerfish fanfin seadevil (Caulophryne jordani) - Deep sea species from Atlantic Ocean, found at 700-3000m.  -  David Shale
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David Shale / Female Anglerfish fanfin seadevil (Caulophryne jordani) - Deep sea species from Atlantic Ocean, found at 700-3000m.
Grizzly bear (Ursus arctos horribilis) catching salmon in Brooks river, Katmai National Park, Alaska, USA, July  -  Eric Baccega
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Eric Baccega / Grizzly bear (Ursus arctos horribilis) catching salmon in Brooks river, Katmai National Park, Alaska, USA, July
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.
Polar bear (Ursus maritimus) male walking across frozen landscape. Svalbard, Norway, April 2019.  -  Danny Green
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Danny Green / Polar bear (Ursus maritimus) male walking across frozen landscape. Svalbard, Norway, April 2019.
Polar bear (Ursus maritimus) male in snow. Svalbard, Norway, April.  -  Danny Green
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Danny Green / Polar bear (Ursus maritimus) male in snow. Svalbard, Norway, April.
RF - Polar bear (Ursus maritimus) male walking through snow covered landscape, mountains in background. 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) male walking through snow covered landscape, mountains in background. Svalbard, Norway, April (This image may be licensed either as rights managed or royalty free.)
Hawfinch (Coccothraustes coccothraustes) perched on branch amongst Hawthorn (Crataegus sp) berries. Sierra de Grazalema Natural Park, Cadiz, Spain. February.  -  Andres M. Dominguez
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Andres M. Dominguez / Hawfinch (Coccothraustes coccothraustes) perched on branch amongst Hawthorn (Crataegus sp) berries. Sierra de Grazalema Natural Park, Cadiz, Spain. February.
Slow motion clip of a Linnaeus' sipo snake (Chironius exoletus) with open mouth, part of threat display, Amazon rainforest, Orellana Province, Ecuador.  -  Morley Read
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Morley Read / Slow motion clip of a Linnaeus' sipo snake (Chironius exoletus) with open mouth, part of threat display, Amazon rainforest, Orellana Province, Ecuador.
Leopard seal (Hydrurga leptonyx) with mouth open, Antarctic Peninsula, Antarctica.  -  Jordi Chias
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Jordi Chias / Leopard seal (Hydrurga leptonyx) with mouth open, Antarctic Peninsula, Antarctica.
American crocodile (Crocodylus acutus) with open mouth amongst Seagrass (Alismatales). Gardens of the Queen National Park, Cuba.  -  Shane Gross
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Shane Gross / American crocodile (Crocodylus acutus) with open mouth amongst Seagrass (Alismatales). Gardens of the Queen National Park, Cuba.
Striped marlin (Tetrapturus audax) feeding on Sardine (Sardinops sagax). Magdalena Bay, Baja California Sur, Pacific Ocean, Mexico.  -  Franco  Banfi
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Franco Banfi / Striped marlin (Tetrapturus audax) feeding on Sardine (Sardinops sagax). Magdalena Bay, Baja California Sur, Pacific Ocean, Mexico.
Chimpanzee juvenile (Pan troglodytes schweinfurthii) in a tree. Kibale National Park, Uganda. January.  -  Eric Baccega
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Eric Baccega / Chimpanzee juvenile (Pan troglodytes schweinfurthii) in a tree. Kibale National Park, Uganda. January.
View down the throat of a male Zoarchias major eelpout (Zoarchias major) that has opened its mouth during a confrontation with another male. Yamaguchi Prefecture, Japan. Pacific Ocean.  -  Tony Wu
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Tony Wu / View down the throat of a male Zoarchias major eelpout (Zoarchias major) that has opened its mouth during a confrontation with another male. Yamaguchi Prefecture, Japan. Pacific Ocean.
Two male Zoarchias major eelpouts (Zoarchias major) engaged in a mouth-to-mouth confrontation. Yamaguchi Prefecture, Japan, Pacific Ocean.  -  Tony Wu
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Tony Wu / Two male Zoarchias major eelpouts (Zoarchias major) engaged in a mouth-to-mouth confrontation. Yamaguchi Prefecture, Japan, Pacific Ocean.
Zoarchias major eelpout (Zoarchias major) with her mouth wide open. Yamaguchi Prefecture, Japan, Pacific Ocean.  -  Tony Wu
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Tony Wu / Zoarchias major eelpout (Zoarchias major) with her mouth wide open. Yamaguchi Prefecture, Japan, Pacific Ocean.
Emperor penguin (Aptenodytes forsteri) male feeding chick aged a few days. Atka Bay, Antarctica. August. Sequence 1/2.  -  Stefan Christmann
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Stefan Christmann / Emperor penguin (Aptenodytes forsteri) male feeding chick aged a few days. Atka Bay, Antarctica. August. Sequence 1/2.
Emperor penguin (Aptenodytes forsteri) male feeding chick aged a few days. Atka Bay, Antarctica. August.  -  Stefan Christmann
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Stefan Christmann / Emperor penguin (Aptenodytes forsteri) male feeding chick aged a few days. Atka Bay, Antarctica. August.
Emperor penguin (Aptenodytes forsteri) chick begging for food, on parent's feet. Atka Bay, Antarctica. August.  -  Stefan Christmann
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Stefan Christmann / Emperor penguin (Aptenodytes forsteri) chick begging for food, on parent's feet. Atka Bay, Antarctica. August.
Emperor penguin (Aptenodytes forsteri), two chicks aged six to eight weeks brooding on parents' feet, one vocalising. Atka Bay, Antarctica. September.  -  Stefan Christmann
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Stefan Christmann / Emperor penguin (Aptenodytes forsteri), two chicks aged six to eight weeks brooding on parents' feet, one vocalising. Atka Bay, Antarctica. September.
Aerial view of Fin whale (Balaenoptera physalus) lunge-feeding, with mouth open and throat pouch distended, southern Sea of Cortez (Gulf of California), Baja California, Mexico.  -  Mark Carwardine
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Mark Carwardine / Aerial view of Fin whale (Balaenoptera physalus) lunge-feeding, with mouth open and throat pouch distended, southern Sea of Cortez (Gulf of California), Baja California, Mexico.
Parrot snake (Leptophis ahaetulla) in aggressive pose with mouth open. Costa Rica.  -  Paul Hobson
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Paul Hobson / Parrot snake (Leptophis ahaetulla) in aggressive pose with mouth open. Costa Rica.
Keel-billed toucan (Ramphastos sulfuratus) perched on branch with beak open. Laguna del Lagarto, Alajuela, Costa Rica.  -  Paul Hobson
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Paul Hobson / Keel-billed toucan (Ramphastos sulfuratus) perched on branch with beak open. Laguna del Lagarto, Alajuela, Costa Rica.
Red fox (Vulpes vulpes), two cubs play fighting. Sheffield, England, UK. May.  -  Paul Hobson
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Paul Hobson / Red fox (Vulpes vulpes), two cubs play fighting. Sheffield, England, UK. May.
Wood warbler (Phylloscopus sibilatrix) singing whilst perched on branch, silhouetted at dawn. Sheffield, England, UK. May.  -  Paul Hobson
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Paul Hobson / Wood warbler (Phylloscopus sibilatrix) singing whilst perched on branch, silhouetted at dawn. Sheffield, England, UK. May.
Brown bear (Ursus arctos), two showing aggression at night. Finland. August.  -  Pal Hermansen
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Pal Hermansen / Brown bear (Ursus arctos), two showing aggression at night. Finland. August.
Nazca booby (Sula granti) in flight at dusk. Punta Suarez, Espanola Island, Galapagos.  -  Tui De Roy
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Tui De Roy / Nazca booby (Sula granti) in flight at dusk. Punta Suarez, Espanola Island, Galapagos.
Giant panda (Ailuropoda melanoleuca) sitting with Bamboo in background. Shenshuping Panda Base, Wolong Nature Reserve, Wenchuan, Sichuan Province, China. Captive.  -  Suzi Eszterhas
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Suzi Eszterhas / Giant panda (Ailuropoda melanoleuca) sitting with Bamboo in background. Shenshuping Panda Base, Wolong Nature Reserve, Wenchuan, Sichuan Province, China. Captive.
Great white shark (Carcharodon carcharias), two below surface. Guadalupe Island, Mexico.  -  David Fleetham
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David Fleetham / Great white shark (Carcharodon carcharias), two below surface. Guadalupe Island, Mexico.
Great white shark (Carcharodon carcharias) breaking surface with mouth open. Guadalupe Island, Mexico.  -  David Fleetham
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David Fleetham / Great white shark (Carcharodon carcharias) breaking surface with mouth open. Guadalupe Island, Mexico.
Clark's anemonefish (Amphiprion clarkii), pair tending to egg mass placed beside the protection of an anemone. Yap, Micronesia.  -  David Fleetham
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David Fleetham / Clark's anemonefish (Amphiprion clarkii), pair tending to egg mass placed beside the protection of an anemone. Yap, Micronesia.
Smooth trunkfish (Lactophrys triqueter), portrait. Bonaire, Dutch Caribbean.  -  David Fleetham
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David Fleetham / Smooth trunkfish (Lactophrys triqueter), portrait. Bonaire, Dutch Caribbean.
Great barracuda (Sphyraena barracuda) with three parasitic Copepods at end of upper jaw. Hawaii.  -  David Fleetham
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David Fleetham / Great barracuda (Sphyraena barracuda) with three parasitic Copepods at end of upper jaw. Hawaii.
Golden jackal (Canis aureus) portrait. Danube Delta, Romania, May.  -  Loic Poidevin
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Loic Poidevin / Golden jackal (Canis aureus) portrait. Danube Delta, Romania, May.
Hippopotamus (Hippopotamus amphibius) splashing in pool in evening light. Mana Pools National Park, Zimbabwe.  -  Tony Heald
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Tony Heald / Hippopotamus (Hippopotamus amphibius) splashing in pool in evening light. Mana Pools National Park, Zimbabwe.
Emu (Dromaius novaehollandiae) juvenile with beak open to catch a leaf, Cleland Wildlife Park, South Australia, March. Captive.  -  Steven David Miller
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Steven David Miller / Emu (Dromaius novaehollandiae) juvenile with beak open to catch a leaf, Cleland Wildlife Park, South Australia, March. Captive.
Hippopotamus (Hippopotamus amphibius) in Chobe River, Botswana.  -  Guy Edwardes
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Guy Edwardes / Hippopotamus (Hippopotamus amphibius) in Chobe River, Botswana.
Little bee-eater (Merops pusillus) vocalising whilst perched on branch, Khwai, Botswana.  -  Guy Edwardes
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Guy Edwardes / Little bee-eater (Merops pusillus) vocalising whilst perched on branch, Khwai, Botswana.
Striped mackerel (Rastrelliger kanagurta)  mouth wide open as it swims through the water, filtering zoopankton with its gill rakers. Marsa Shouna, Port Ghalib, Marsa Alam, Egypt. Red Sea  -  Alex Mustard
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Alex Mustard / Striped mackerel (Rastrelliger kanagurta) mouth wide open as it swims through the water, filtering zoopankton with its gill rakers. Marsa Shouna, Port Ghalib, Marsa Alam, Egypt. Red Sea
Grey whale (Eschrichtius robustus) at water surface with mouth open showing baleen plates, San Ignacio Lagoon, Baja California, Mexico  -  Mark Carwardine
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Mark Carwardine / Grey whale (Eschrichtius robustus) at water surface with mouth open showing baleen plates, San Ignacio Lagoon, Baja California, Mexico
American crocodile (Crocodylus acutus) extreme close up with jaws open, Banco Chinchorro Biosphere Reserve, Caribbean region, Mexico  -  Claudio  Contreras
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Claudio Contreras / American crocodile (Crocodylus acutus) extreme close up with jaws open, Banco Chinchorro Biosphere Reserve, Caribbean region, Mexico
RF- Lesser black-backed gulls (Larus fuscus) calling from shoreline, beaks open, England, UK, May. (This image may be licensed either as rights managed or royalty free.)  -  Ernie  Janes
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Ernie Janes / RF- Lesser black-backed gulls (Larus fuscus) calling from shoreline, beaks open, England, UK, May. (This image may be licensed either as rights managed or royalty free.)
Vervet monkey (Chlorocebus pygerythrus) yawning while sitting on a fallen tree in forests, Limpopo River, Kruger National Park, South Africa.  -  Neil Aldridge
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Neil Aldridge / Vervet monkey (Chlorocebus pygerythrus) yawning while sitting on a fallen tree in forests, Limpopo River, Kruger National Park, South Africa.
Lioness (Panthera leo) yawning in early morning light on Kariega Game Reserve, South Africa.  -  Neil Aldridge
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Neil Aldridge / Lioness (Panthera leo) yawning in early morning light on Kariega Game Reserve, South Africa.
American Alligator (Alligator mississippiensis) split level, Everglades, USA, January.  -  Ingo Arndt
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Ingo Arndt / American Alligator (Alligator mississippiensis) split level, Everglades, USA, January.
Whale Shark (Rhincodon typus) feeding at Bagan (floating fishing platform),  Cenderawasih Bay, West Papua, Indonesia. Winner of the Man and Nature Portfolio Award in the Terre Sauvage Nature Images Aw...  -  Pete Oxford
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Pete Oxford / Whale Shark (Rhincodon typus) feeding at Bagan (floating fishing platform), Cenderawasih Bay, West Papua, Indonesia. Winner of the Man and Nature Portfolio Award in the Terre Sauvage Nature Images Aw...
Nassau grouper (Epinephelus striatus) yawning on a coral reef drop off. San Salvador island, Bahamas. Bahamas Sea, Tropical West Atlantic Ocean.  -  Alex Mustard
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Alex Mustard / Nassau grouper (Epinephelus striatus) yawning on a coral reef drop off. San Salvador island, Bahamas. Bahamas Sea, Tropical West Atlantic Ocean.
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