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

Fabio Pupin / Peringuey's desert adder, (Bitis peringueyi), sidewinding on dune, Namib desert, Namibia, February . Non-ex.

Ingo Arndt / Dwarf puff adder / Sidewinder snake crossing sand {Bitis peringueyi} Namibia

Michael D. Kern / Rhinoceros iguana (Cyclura cornuta) captive, from Hispaniola, Caribbean, Vulnerable species

Paul Harris / 2020VISION / Local resident Roy Peters holding two Adders (Vipera berus) male in foreground female behind, Caesar's Camp, Fleet, Hampshire, England, UK, May 2011. Model released.

Juergen Freund / Researchers Guido and Katja Westhoff work in a mobile lab in the bush. To handle the deadly Common death adder (Acanthophis antarcticus) Guido puts the head and upper portion of the snake in a plastic...

Juergen Freund / Researchers Guido and Katja Westhoff catching a highly venomous Common death adder (Acanthophis antarcticus) found 10 minutes into their group's evening road collection. The death adder ranks 9th out...

Juergen Freund / Common death adder (Acanthophis antarcticus) well camouflaged in its natural habitat. Queensland, Australia, February

Danny Green / 2020VISION / Adder (Vipera berus) coiled, basking on moss in the spring sunshine, Staffordshire, England, UK, April. Photographer quote: "OK so snakes are perhaps not as sexy as seals or foxes but I just can't get...

Pete Oxford / Snake charmer's Egyptian cobra (Naja haje) and African puff-adder (Bitis arietans arietans) Djemaa el-Fna (the square), Marrakech, Morocco, June 2009

Colin Varndell / Adder (Vipera berus) portrait coiled up, Powerstock Common nature reserve, Dorset, England, UK June

Andy Sands / Two male Adders (Vipera berus) fighting / dancing during mating season, Captive, UK