David Shale / Fang Tooth {Anoplogaster cornuta} close-up of head showing teeth, from the Mid-Atlantic Ridge, 2600m
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Juergen Freund / Male Tooth-billed bowerbird (Scenopoeetes dentirostris) removing yellow leaves from his bower, leaving only green leaves turned over on the ground, Atherton Tablelands, Queensland, Australia.
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Emanuele Biggi / Great Fen / Raft spider (Dolomedes plantarius), adult female eating an invasive species of fish, Western mosquitofish, (Gambusia affinis), Alessandria, Italy, August.
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Solvin Zankl / Common fangtooth (Anoplogaster cornuta) deep sea species from Atlantic Ocean close to Cape Verde. Captive.
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Solvin Zankl / Common fangtooth (Anoplogaster cornuta) portrait, deep sea species from Atlantic Ocean off Cape Verde. Captive.
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Thomas Marent / Mandrill (Mandrillus sphinx) male in defensive posture, Lekedi Natural Preserve, Gabon
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Thomas Marent / Lion-tailed Macaque (Macaca silenus) in threat display, Western Ghats, India
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Luciano Candisani / Jacare Caiman (Caiman yacare) fishing in flooded plain, Pantanal, Brazil
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Chris & Monique Fallows / Great white shark (Carcharodon carcharias) near surface, Seal Island, False Bay, South Africa.
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Chris & Monique Fallows / Ragged tooth shark (Carcharias taurus) showing teeth, De Hoop, South Africa.
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Cyril Ruoso / Drill (Mandrillus leucophaeus) alpha male calling, Pandrillus Drill Sanctuary, Cross River State, Nigeria
Wild Wonders of Europe / Zankl / Newly hatched Loggerhead turtle (Caretta caretta) showing egg tooth used to break through shell, Dalyan Delta, Turkey, August 2009
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Theo Allofs / Celebes Black Macaque (Macaca nigra) dominant male, Sulawesi, Indonesia
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David Shale / Fang Tooth {Anoplogaster cornuta} close-up of head showing teeth, from the Mid-Atlantic Ridge, 2600m
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Richard Du Toit / African Lion (Panthera leo) female growling, Masai Mara National Reserve, Kenya
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Richard Du Toit / Burchell's Zebra (Equus burchellii) close-up of face of braying animal, Hluhluwe-umfolozi Game Reserve, South Africa
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Mitsuaki Iwago / African Lion (Panthera leo) female roaring, Serengeti National Park, Tanzania
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Ingo Arndt / Alpine Marmot (Marmota marmota) showing sharp teeth while calling, Hohe Tauern National Park, Austria
Alex Hyde / Tooth of Southern Elephant Seal bull (Mirounga leonina) on beach. Jason Harbour, South Georgia. November.
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David Perpinan / Dental disease in a captive Orca / Killer whale (Orcinus orca). This is a common condition in captive orcas. Small repro only
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Ingo Arndt / Mountain Lion (Puma concolor) female with abscess and broken tooth, Torres del Paine National Park, Patagonia, Chile
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Juergen Freund / Male Tooth-billed bowerbird (Scenopoeetes dentirostris) singing from a branch, Atherton Tablelands, Queensland, Australia. 2017.
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Juergen Freund / Male Tooth-billed bowerbird (Scenopoeetes dentirostris) returning to his bower with a new green leaf, removes yellow leaves, leaving only green leaves, Atherton Tablelands, Queensland, Australia.
David Fleetham / Sharks' teeth are not attached to the jaw, but embedded in the flesh. Lemon Shark (Negaprion brevirostris) shedding a front tooth, with remora fish. West End, Grand Bahamas, Atlantic Ocean.
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David Fleetham / Groove Tooth Cowry (Cypraea suicidentata) one of the more common of the endemic Hawaiian cowries, reaches about an inch and a half in length. Hawaii.
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Sylvain Cordier / Redeye Piranha ( Serrasalmus rhombeus / niger ) out of water, close up of teeth, Rio Negro, Amazonas, Brazil.
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Sylvain Cordier / Red-bellied piranha or red piranha (Pygocentrus nattereri) out of water, close up of teeth, Rio Negro, Amazonas, Brazil.
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Sylvain Cordier / RF - Red-bellied piranha or red piranha (Pygocentrus nattereri) taken out of water - close up showing sharp teeth. Rio Negro, Amazonas, Brazil. (This image may be licensed either as rights managed or...
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Sylvain Cordier / RF - Red-bellied piranha (Pygocentrus nattereri) and Redeye Piranha (Serrasalmus rhombeus formely Serrasalmus niger) out of water. Comparison, with both showing sharp teeth. Rio Negro, Amazonas, Br...
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Daniel Heuclin / Conover's tuco-tuco (Ctenomys conoveri) digging burrow Kaa-Iya National Park, Bolivia.
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Daniel Heuclin / Conover's tuco-tuco (Ctenomys conoveri) digging burrow Kaa-Iya National Park, Bolivia.
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Daniel Heuclin / Conover's tuco-tuco (Ctenomys conoveri) digging burrow Kaa-Iya National Park, Bolivia.
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Daniel Heuclin / Conover's tuco-tuco (Ctenomys conoveri) digging burrow Kaa-Iya National Park, Bolivia.
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Alex Mustard / RF - California sea lion (Zalophus californianus) with mouth open close to the camera. The milk teeth of this pup show decay, which is quite usual. Los Islotes, La Paz, Baja California Sur, Mexico. Se...
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Chris Gomersall / Close-up of breaching Short-beaked common dolphin (Delphinus delphis), showing tooth marks inflicted by other dolphins - probably during courtship. Hebrides, Scotland. July .
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Jean E. Roche / Mosquitofish (Gambusia affinis) female, introduced species to control mosquitos, Camargue, France, June. Biological pest control.
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Michel Roggo / Half tooth fish (Hemiodopsis sp.) Rio Negro tributary, Amazon, Brazil. Photographed for The Freshwater Project
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Hiroya Minakuchi / Leopard (Panthera pardus) yawning, Samburu National Park, Kenya