Staffan Widstrand / Polar Bear (Ursus maritimus) head portrait with blue tongue out, Svalbard, Norway

Staffan Widstrand / Polar Bear (Ursus maritimus) head portrait with blue tongue sticking out, Svalbard, Norway

Andrew Walmsley / Mini lop-eared domestic rabbit with one ear up and one ear down, and tongue sticking out, Captive, Christchurch, New Zealand

Rolf Nussbaumer / Head portrait of Gulf Coast Ribbon snake (Thamnophis proximus orarius) covered in duckweed and swimming, with tongue protruding, Fennessey Ranch, Refugio, Corpus Christi, Coastal Bend, Texas Coast, U...

Andy Rouse / Masai giraffe (Giraffa camelopardalis tippelski) showing long tongue, captive, Marwell Zoo, UK

Andy Rouse / European otter (Lutra lutra) on riverbank, sticking out tongue, captive, UK

Kim Taylor / Common European Toad (Bufo bufo) female sticking out tongue to feed on mealworm, Captive, UK,

Kim Taylor / Common European Toad (Bufo bufo) female sticking out tongue to feed on mealworm, Captive, UK, sequence 2/3

Kim Taylor / Common European Toad (Bufo bufo) female sticking out tongue to feed on mealworm, Captive, UK, sequence 2/3

Anup Shah / Golden langur {Presbytis geei} sticking its tongue out, India

Staffan Widstrand / Polar Bear (Ursus maritimus) portrait with blue tongue sticking out, Svalbard, Norway

Ingo Arndt / Grizzly Bear (Ursus arctos horribilis) sticking out tongue, Lake Clark National Park, Alaska

Mark Carwardine / Malayan sun bear (Ursus malayanus) with long tongue sticking out, captive, near Phnom Penh, Cambodia, Endangered or threatened species (Vulnerable)

Mark Carwardine / Javan langur / leaf monkey (Trachypithecus / Presbytis auratus) sticking out tongue, Endangered, captive, from Indonesia, Bristol Zoo Not available for ringtone/wallpaper use.

Mark Carwardine / Mangrove / Yellow-ringed cat snake with tongue out {Boiga dendrophila} captive, from Asia

Mark Carwardine / Mangrove / yellow-ringed cat snake with tongue out {Boiga dendrophila} captive, from Asia

Richard Du Toit / Hippopotamus (Hippopotamus amphibius) sticking out tongue, Kruger National Park, South Africa

Roland Seitre / Spectacled Bear (Tremarctos ornatus) climbing tree, with tongue out. Captive. Chaparri reserve, Chiclayo, Lambayeque, Peru, 2010.

Mark Hughes / Tui (Prosthemadera novaeseelandiae) poking out tongue, Karori Wildlife Sanctuary, Wellington, New Zealand

Petra Wegner / Australian Shepherd, red-tri, sitting in front of woman with tongue out. Model released

Petra Wegner / Australian Shepherd, red-tri, standing on back legs begging with tongue hanging out.

Petra Wegner / Australian Shepherd, red-tri, head portrait with tongue out.

Petra Wegner / Elo, bitch, 13 month puppy, sitting portrait with tongue out.

Petra Wegner / Elo, bitch, 13 month puppy, head portrait with tongue out.

Petra Wegner / Elo, bitch, 13 month puppy, lying down with tongue out.

Petra Wegner / German Shepherd / Alsatian, puppy, 4 months, head portrait with tongue out.

Petra Wegner / Cavalier King Charles Spaniel, tricolour, 12 months, sitting in wild flower meadow, with tongue out.

Petra Wegner / Ogar Polski / Polish Hound, short haired females, standing with tongue out.

Petra Wegner / Ogar Polski / Polish Hound, short haired, lying down with tongue out.

Petra Wegner / Chihuahua, longhaired, standing looking up with tongue out.

Petra Wegner / Cavalier King Charles Spaniel, black-and-tan, sitting portrait with tongue out.

Petra Wegner / Australian Shepherd, red-tri, sitting with tongue hanging out.

Petra Wegner / Briard / Berger de Brie, lying down with tongue out.

Petra Wegner / Briard / Berger de Brie, lying down with tongue out.

Petra Wegner / Briard / Berger de Brie, puppy, 12 month, lying down head with tongue out.

Petra Wegner / German Shepherd / Alsatian, puppy, 4 months, sitting with tongue out.

Petra Wegner / German Shepherd / Alsatian, puppy, 4 months, head profile with tongue out.

Petra Wegner / German Shepherd / Alsatian, puppy, 4 months, sitting with tongue out.

Petra Wegner / Ogar Polski / Polish Hound, short haired bitch, head portrait with tongue out.

Petra Wegner / Ogar Polski / Polish Hound, short haired females, standing with tongue out.

Petra Wegner / Ogar Polski / Polish Hound, short haired male, lying down portrait with tongue out.

Petra Wegner / Elo, bitch, 11 months, standing in wild flower meadow with tongue out.

Petra Wegner / Briard / Berger de Brie, puppy, 12 month, lying down with tongue out.

Mark Hamblin / 2020VISION / Mountain hare (Lepus timidus) with partial winter coat and tongue sticking out, Scotland, UK, April

Mark Hamblin / 2020VISION / Mountain hare (Lepus timidus) in winter coat, sitting in snow, with tongue poking out, Scotland, UK, February

Kerstin Hinze / Grey seal (Halichoerus grypus) with tongue out, on beach, Dune of Helgoland, North Sea, Germany,

Hanne & Jens Eriksen / Saw scaled viper (Echis carinatus) with tongue out, captive, Oman, February

Orsolya Haarberg / Two Chamois (Rupicapra rupicapra) in snow storm, one with tongue out, testing the air for female ovulation, Gran Paradiso National Park, Alps, Italy, November

Nature Production / Japanese Gecko (Gekko japonicus) with tongue out, looking through gap in rusty metal sheet, Japan

Lassi Rautiainen / Adder (Vipera berus) in strike posture with tongue out, Finland, July

Danny Green / 2020VISION / Grass Snake (Natrix natrix) portrait with tongue out, Staffordshire, England, UK, April

Pete Oxford / White-fronted capuchin monkey (Cebus albifrons) hanging from tree branch with tongue poking out, Puerto Misahualli, Amazon rainforest, Ecuador, South America

Aflo / ic-05005 Puppy yawning portrait.

Pete Oxford / Andean Forest Pitviper (Bothriopsis pulchra) with extended tongue, Tapichalaca Reserve, Ecuador

Hanne & Jens Eriksen / Eastern sand gecko {Stenodactylus leptocosymbotus} close-up, tongue out, UAE

Mark Bowler / Ball / Royal python (Python regius) head portrait with tongue out

Mark Bowler / Ball / Royal python (Python regius) coiled with tongue out

Tony Phelps / African rock python (Python natalensis) with tongue out, Alicedale, Eastern Cape, South Africa

Fabio Liverani / Four lined snake (Elaphe quatuorlineata) with tongue out, Matera, Basilicata, Southern Italy

Donald M. Jones / White-tailed Antelope Squirrel (Ammospermophilus leucurus) sticking out its tongue, southern Nevada

Mary McDonald / Savannah monitor lizard {Varanus exanthematicus} flicking out its blue tongue, Samburu reserve, Kenya

Steven David Miller / Mertens water monitor {Varanus mertensi} peering out from resting hole in log, tongue exposed, Lake Kununurra, Western Australia

Edwin Giesbers / Panther chameleon (Furcifer pardalis) with tongue sticking out, Madagascar

Jane Burton / Puff adder {Bitis arietans} scenting out its prey, a Grass rat, after striking it, captive, sequence 1/5

Michel Poinsignon / European Wryneck (Jynx torquilla) perched on branch with tongue sticking out, Lorraine, France

Paul Hobson / Red Deer {Cervus elaphus} male with bracken over antlers and tongue out in rutting season, autumn, Bradgate Park, Leicestershire, UK

Heidi & Hans-Juergen Koch / Honey Bee (Apis mellifera) with out-stretched tongue licking drop of sugar liquid, Bee Station at the Bavarian Julius-Maximilians-University of Wurzburg, Germany

Konrad Wothe / Grizzly Bear (Ursus arctos horribilis) sticking out its tongue, North America

Konrad Wothe / Grizzly Bear (Ursus arctos horribilis) sticking out its tongue, North America

Sergey Gorshkov / Brown Bear (Ursus arctos) with tongue sticking out, Kamchatka, Russia

John Cancalosi / Grass snake {Natrix natrix} laying on its back with mouth open and tongue hanging out, feigning death, England

John Cancalosi / Grass snake {Natrix natrix} laying on its back with mouth open and tongue hanging out, feigning death, England

John Cancalosi / Grass snake {Natrix natrix} laying on its back with mouth open and tongue hanging out, feigning death, England

Colin Seddon / Mongrel dog, portrait with tongue out, UK

Colin Seddon / Portrait of Mongrel dog panting with tongue out, UK

Colin Seddon / Black Labrador head portrait with tongue out, UK

Paul Hobson / Grass snake (Natrix natrix) in water, head out, forked tongue flicking, S.Yorks, UK

Paul Hobson / Male adder (Vipera berus) tongue out, scenting, spring. Peak District NP, UK

Paul Hobson / Male adder (Vipera berus) with forked tongue out, scenting. Peak District NP, UK, spring

Paul Hobson / Male adder (Vipera berus) with forked tongue out, scenting. Peak District NP, UK, spring

John Cancalosi / Spanish ibex {Capra pyrenaica} male displaying in rut with tongue out, Pyrenees, Spain

Jane Burton / Mastiff bitch puppy, 10 months old, sitting with tongue hanging out of her mouth

Jane Burton / Staffordshire Bull Terrier bitch, 2 years old, sitting and looking up with tongue hanging out of her mouth.

Suzi Eszterhas / Cheetah (Acinonyx jubatus) eight week old cub peeking out from beneath mother, Maasai Mara Reserve, Kenya

Yva Momatiuk & John Eastcott / Alaska Moose (Alces alces gigas) bull, largest herbivore with antlers in North America, standing in colorful fall tundra with tongue out, looking for cows, Denali National Park, Alaska

Ken Preston-Mafham/PREMAPHOTOS / Tropical / Cascabel rattlesnake (Crotalus durissus) flicking out its tongue at night in tropical dry forest, Costa Rica. The pit with heat-seeking organs is clearly visible.

Juan Manuel Borrero / Jaguar (Panthera onca) yawning with tongue out, captive, Peru

Jane Burton / Bulldog bitch, "Pixie", lying down with tongue out.

Ken Preston-Mafham/PREMAPHOTOS / Tropical / Cascabel rattlesnake (Crotalus durissus) flicking out its tongue at night in tropical dry forest, Costa Rica

Steven David Miller / Blue tongued skink {Tiliqua scincoides} with tongue out in threat display, Garig Gunak Barlu National Park, Cobourg Peninsula, Northern Territory, Australia

Mike Wilkes / Grass snake (Natrix natrix) profile with tongue out tasking air, UK

Mark Raycroft / Miniature Pinscher (Canis familiaris) standing on rocks with tongue sticking out side of mouth

Tony Phelps / Male Puff adder {Bitis arietans} tongue out, Little karoo, South Africa

Steven David Miller / Blotched Blue tongue Lizard {Tiliqua nigrolutea} with tongue out in alarm display, The Australian Reptile Park, New South Wales, Australia.