Mark MacEwen / Broad snouted caiman (Caiman latirostris) baby in mothers mouth being carried from nest, Sante Fe, Argentina, February

Mark Carwardine / Great white shark (Carcharodon carcharias) underwater, Guadalupe Island, Mexico (North Pacific)

David Shale / Fang Tooth {Anoplogaster cornuta} close-up of head showing teeth, from the Mid-Atlantic Ridge, 2600m

Anup Shah / Nile crocodile holding newly hatched young in mouth {Crocodylus niloticus} Kenya

David Shale / Deep sea Anglerfish {Himantolophus sp} female with lure projecting from head to attract prey, Atlantic ocean. Anglerfish have small poorly developed eyes but detect movement and prey through a well de...

Doug Perrine / Great white shark jaws open at surface {Carcharodon carcharias} South Africa (Non-ex).

David Shale / Deep sea Anglerfish {Melanocoetus sp} female with lure projecting from head to attract prey. Atlantic ocean

Paul Williams / Lion (Panthera leo) close up of teeth while its snarling, captive.

Alex Mustard / Tiger cardinalfish (Cheilodipterus macrodon) male mouth brooding a clutch of eggs behind his sharp teeth. Gubal Island, Egypt. Strait Of Gubal, Red Sea.

Piotr Naskrecki / Angolan free-tailed bat (Mops condylurus) close up of teeth. Codzo Caves, Mazamba, Sofala, Mozambique. Controlled conditions

Piotr Naskrecki / Angolan free-tailed bat (Mops condylurus) close up of teeth. Codzo Caves, Mazamba, Sofala, Mozambique. Controlled conditions

David Fleetham / Jaws and teeth of Stout Moray (Gymnothorax eurostus). Hawaii.

David Fleetham / Lemon shark (Negaprion brevirostris) viewed from below. West End, Grand Bahamas, Caribbean.

David Fleetham / White mouthed moray eel (Gymnothorax meleagris), Hawaii.

David Fleetham / Great white shark (Carcharodon carcharias) off Guadalupe Island, Mexico.

David Fleetham / Great white shark (Carcharodon carcharias), portrait. Guadalupe Island, Mexico.

Alex Mustard / American crocodile (Crocodylus acutus) reflected in the surface as it floats, Jardines de la Reina, Gardens of the Queen National Park, Cuba. Caribbean Sea.

Ingo Arndt / Mountain gorilla (Gorilla gorilla berengei) yawning, showing stained teeth, Parc des Volcans, Rwanda

Francois Savigny / Chinese tiger {Panthera tigris amoyensis} chewing & scratching tree bark to clean claws & teeth. Meuachan Mountains, China, captive.

Francois Savigny / Spectacled caiman {Caiman crocodilus} jaw and teeth close-up. Llanos, Venezuela, S. America

Ingo Arndt / Hamadryas baboon male threat display {Papio hamadryas} Africa

Ingo Arndt / Gelada baboon males threat display {Theropithecus gelada} Simien Mt NP, Ethiopia

Ingo Arndt / Gelada baboon male threat display {Theropithecus gelada} Simien Mt NP, Ethiopia

Claudio Contreras / American crocodile (Crocodylus acutus) split level with animal resting at surface in shallow water over seagrass bed, Banco Chinchorro Biosphere Reserve, Caribbean region, Mexico

Claudio Contreras / American crocodile (Crocodylus acutus) resting just above seagrass underwater, Banco Chinchorro Biosphere Reserve, Caribbean region, Mexico

Claudio Contreras / American crocodile (Crocodylus acutus) extreme close up with jaws open, Banco Chinchorro Biosphere Reserve, Caribbean region, Mexico

Richard Robinson / Shortfin mako shark (Isurus oxyrinchus) profile portrait, just below surface, off the West Coast of Auckland, New Zealand, February

Ingo Arndt / American Alligator (Alligator mississippiensis) split level, Everglades, USA, January.

Neil Aldridge / Lioness (Panthera leo) yawning in early morning light on Kariega Game Reserve, South Africa.

Cyril Ruoso / Golden monkey (Rhinopithecus roxellana) male showing canine teeth, Qinling Mountains, China.

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

Alex Mustard / Great hammerhead shark (Sphyrna mokarran) female at night with Bar jacks (Caranx ruber), South Bimini, Bahamas. The Bahamas National Shark Sanctuary. Gulf Stream, West Atlantic Ocean.

Bence Mate / Jacare / Yacare caiman (Caiman crocodilus yacare) two caymans, one with mouth open, Pantanal, Brazil.

Tony Wu / Sperm whale (Physeter macrocephalus) female at the ocean surface with her mouth open. This whale has just surfaced from foraging in deep water. Ogasawara or Bonin Islands, Japan.

Jabruson / African elephant (Loxodonta africana) ivory in piles, ready to be burnt by the Kenya Wildlife Service (KWS). The burn included 105 tons of elephant ivory worth over $150 million Nairobi National Park,...

Jabruson / African elephant (Loxodonta africana) ivory in piles, ready to be burnt by the Kenya Wildlife Service (KWS). The burn included 105 tons of elephant ivory worth over $150 million Nairobi National Park...

Jabruson / Piles of African elephant ivory set on fire by the Kenya Wildlife Service (KWS). This burn included over 105 tons of elephant ivory, worth over $150 million. Nairobi National Park, Kenya, 30th April 2...

Jabruson / Piles of African elephant ivory set on fire by the Kenya Wildlife Service (KWS). This burn included over 105 tons of elephant ivory, worth over $150 million. Nairobi National Park, Kenya, 30th April 2...

Jabruson / Piles of African elephant ivory set on fire by the Kenya Wildlife Service (KWS). This burn included over 105 tons of elephant ivory, worth over $150 million. Nairobi National Park, Kenya, 30th April 2...

Jabruson / Piles of African elephant ivory set on fire by the Kenya Wildlife Service (KWS). This burn included over 105 tons of elephant ivory, worth over $150 million. Nairobi National Park, Kenya, 30th April 2...

Jabruson / Piles of African elephant ivory set on fire by the Kenya Wildlife Service (KWS). This burn included over 105 tons of elephant ivory, worth over $150 million. Nairobi National Park, Kenya, 30th April 2...

Edwin Giesbers / Barbary macaque (Macaca sylvanus) baring teeth as a sign of submission, Gibraltar Nature Reserve, Gibraltar,

Thomas Marent / Mandrill (Mandrillus sphinx) male in defensive posture, Lekedi Natural Preserve, Gabon

Solvin Zankl / Illuminated netdevil (Linophryne arboritera), female specimen, from deepsea Atlantic Ocean near Cape Verde at a depth of 1900m.

Espen Bergersen / Bengal tiger (Panthera tigris) baring teeth, Bandhavgarh, India.

Cyril Ruoso / Adult male Drill (Mandrillus leucophaeus) yawning, mouth wide open showing canine teeth, Pandrillus Sanctuary, Nigeria. Non-ex

Thomas Marent / Lion-tailed Macaque (Macaca silenus) in threat display, Western Ghats, India

Luciano Candisani / Jacare Caiman (Caiman yacare) fishing in flooded plain, Pantanal, Brazil

Mark MacEwen / Lioness (Panthera leo) feeding on carcass, Ngorongoro Crater, Tanzania, Africa.

Chris & Monique Fallows / Great white shark (Carcharodon carcharias) near surface, Seal Island, False Bay, South Africa.

Chris & Monique Fallows / Great white shark (Carcharodon carcharias) breaching whilst attacking seal decoy, Seal Island, False Bay South Africa.

Chris & Monique Fallows / Ragged tooth shark (Carcharias taurus) showing teeth, De Hoop, South Africa.

Jabruson / Hippopotamuses fighting (Hippopotamus amphibius) taken before major crash in numbers in the 1990s due to political instability and hunting. Rwindi sector of the Virunga National Park. Democratic Repub...

Denis-Huot,Denis-Huot / Lions (Panthera leo) mating, Masai-Mara Game Reserve, Kenya

Alex Mustard,Alex Mustard / Wolf fish (Anarhichas lupus) face portrait. Gardur, south west Iceland. North Atlantic Ocean.

Mark MacEwen / Broad snouted caiman (Caiman latirostris) baby carried in mother's mouth from the nest, Sante Fe, Argentina, February

Laurent Geslin / Female African lion (Panthera leo) swimming across the Khwai river, Okavango Delta, Moremi reserve, Botswana, sequence 5/5

Laurent Geslin / Skull and teeth of Blue monkey {Cercopithecus mitis}

Laurent Geslin / Southern plains grey / Hanuman langur {Semnopithecus dussumieri} display, Ranthambore NP, Rajasthan, India.

Franco Banfi,Franco Banfi / Spectacled caiman (Caiman crocodilus) Rio Baia Bonita, Bonito, Mato Grosso do Sul, Brazil

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

Cyril Ruoso / Drill (Mandrillus leucophaeus) alpha male calling, Pandrillus Drill Sanctuary, Cross River State, Nigeria

Cyril Ruoso / Drill (Mandrillus leucophaeus) adult male appeasement face, Pandrillus Drill Sanctuary, Nigeria

Cyril Ruoso / Bonobo (Pan paniscus) smiling while laying on ground, ABC Sanctuary, Democratic Republic of the Congo

Bence Mate / Head portrait of Red fox (Vulpes vulpes) yawning, Transylvania, Romania

Denis-Huot,Denis-Huot / Lion (Panthera leo) male using 'flehmen response' to smell, Masai-Mara Game Reserve, Kenya. Vulnerable species.

Denis-Huot,Denis-Huot / Lion (Panthera leo) mating, Masai-Mara Game Reserve, Kenya. Vulnerable species.

Denis-Huot / Leopard (Panthera pardus) female yawning, Samburu game reserve, Kenya

Franco Banfi / Bridled parrotfish (Scarus frenatus) clownish grin reveals its power tools: grinding teeth used to scrape algae from rock, Maldives, Indian Ocean. Highly commended in the Underwater World Category of...

Anup Shah / Celebes / Black crested macaque (Macaca nigra) sub-adult male yawning, Tangkoko National Park, Sulawesi, Indonesia.

Mark Carwardine / Great white shark (Carcharodon carcharias) underwater, Guadalupe Island, Mexico (North Pacific)

Christophe Courteau / Gelada Baboon (Theropithecus gelada) dominant male threat display, lip curl, Simien NP, Ethiopia, 3000m altitude

Anup Shah / Mature male gelada (Theropithecus gelada) fighting head-on, upper lip curled back revealing teeth. Simien Mountains National Park, Ethiopia.

Solvin Zankl / Dragonfish (Melanostomias melanops) - deep sea specimen from 2000m depth, nr Cape Verde Islands, North Atlantic

Solvin Zankl / Viperfish (Chauliodus sloani) - deep sea specimen from Portugal

Steven David Miller / Australian freshwater / Johnstone's crocodile (Crocodylus johnsoni) with fish in mouth, a scrap from a fisherman, Lake Kununurra, Western Australia, July

Steven David Miller / Australian freshwater / Johnstone's crocodile (Crocodylus johnsoni) with damaged upper jaw in shallow water waiting for a scrap from a fisherman, Lake Kununurra, Western Australia, July

Linda Pitkin / 2020VISION / Common Toad (Bufo bufo) seen from below against a blue sky. Surrey, England, March. Did you know? It used to be believed that toads had a magical stone in their head; however 'toadstones' which have...

Erlend Haarberg / Norway lemming (Lemmus lemmus) calling on spring snow, Vauldalen, Norway, May

Hanne & Jens Eriksen / Dromedary / Arabian camel (Camelus dromedarius) close-up profile of face showing teeth, in desert, UAE, December. Not available for ringtone/wallpaper use.

Alex Mustard / 2020VISION / Old male Grey seal (Halichoerus grypus) with mouth wide open showing worn teeth, Lundy Island, Bristol Channel, England, UK, May. 2020VISION Book Plate.

Mark Bowler / Common Squirrel Monkey (Saimiri sciureus ssp. macrodon) in tree, calling, Peru, captive

Todd Mintz / Lemon shark (Negaprion brevirostris) at surface, Bahamas, Caribbean

Linda Pitkin / 2020VISION / Atlantic wolf fish (Anarhichas lupus) in a rock crevice, St Abbs (St Abbs and Eyemouth Voluntary Marine Reserve), Berwickshire, Scotland, UK, August 2011

Petra Wegner / Cavalier King Charles Spaniel, tricolour, getting teeth brushed with oral cleaner, model released

Nick Garbutt / Adult male Hippopotamus (Hippopotamus amphibius) posturing in agressive 'yawn' behaviour, Luangwa River, South Luangwa National Park, Zambia, November

Nick Garbutt / Adult male Hippopotamuses (Hippopotamus amphibius) posturing in aggressive 'yawn' behaviour, Luangwa River, South Luangwa National Park, Zambia, November. Digital composite (two frames stitched togeth...

Jeff Rotman / Close up of mouth and teeth of Red Sea needlefish (Tylosurus choram) Red Sea, Egypt

Juergen Freund / Great barracuda (Sphyraena barracuda) West New Britain, Papua New Guinea

Juergen Freund / Great barracuda (Sphyraena barracuda) with Teira batfish (Platax teira) in background, Kimbe Bay, West New Britain, Papua New Guinea.

Andy Rouse / Portrait of a Mountain Gorilla (Gorilla beringei) with mouth wide open. Rwanda, Africa

Juergen Freund / Whitemargin stargazer (Uranoscopus sulphureus) half hidden in the sand. Lembeh Strait, North Sulawesi, Indonesia

Andy Rouse / Grizzly Bear (Ursus arctos horribilis) thrashing a large caught salmon. Katmai, Alaska, USA, August.

Fiona Rogers / Bornean Orang-utan (Pongo pygmaeus wurmbii) mature male 'Tom' yawning head portrait. Camp Leakey, Tanjung Puting National Park, Central Kalimantan, Borneo, Indonesia, June 2010. Rehabilitated and rele...

Luiz Claudio Marigo / Jaguar (Panthera onca palustris) in water with Yacare Caiman (Caiman yacare), its teeth around the back of the prey's neck. Piquiri River, The Pantanal wetlands of Mato Grosso State, Brazil, October....

Alex Mustard / 2020VISION / Grey seal (Halichoerus grypus) shows its teeth in a playful moment, Lundy Island, Bristol Channel, England, UK, May