Luis Quinta / Juvenile male Montpellier snake (Malpolon monspessulanus) Alentejo, Portugal

David Shale / Fangtooth (Anoplogaster cornuta) portrait, Mid-Atlantic Ridge, North Atlantic Ocean

Michael & Patricia Fogden / Clark's Coral Snake (Micrurus clarki) venomous snake with warning coloration, rainforest, Costa Rica

Michael & Patricia Fogden / Black-tailed Rattlesnake (Crotalus molossus) portrait, Chiricahua Mountains, Arizona

Tony Phelps / Adder {Vipera berus} melanic / black form female with normal morph young. Dorset, UK

Michael Richards / John Downer / Spitting cobra sprays twin jets of venom with deadly accuracy at eyes of attacker (Resolution restriction - image digitised from film, 'Weird Nature' tv series)

Daniel Heuclin / Researcher from Indio Mountain Research Station capturing Eastern black-tailed rattlesnake (Crotalus ornatus) Chihuahuan Desert,Texas, USA. May 2019.

Daniel Heuclin / Black-tailed rattlesnake (Crotalus molossus). Chiricahua mountains, Arizona, USA. June.

Fabio Pupin / Great Lakes Bush Viper, (Atheris nitschei), hanging from branch in swamp, Kahuzi-Biega NP, Democratic Republic of Congo, November . Non-ex.

Fabio Pupin / Great Lakes Bush Viper, (Atheris nitschei), hanging from branch in swamp, Kahuzi-Biega NP, Democratic Republic of Congo, November . Non-ex.

Fabio Pupin / Great Lakes Bush Viper, (Atheris nitschei), hanging from branch in swamp, Kahuzi-Biega NP, Democratic Republic of Congo, November . Non-ex.

John Chan / Two male Southern Pacific rattlesnakes (Crotalus oreganus helleri) fighting during mating season. This behaviour is known as a "combat dance", and is used to determine dominance and the right to mate...