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

Daniel Heuclin / Horned viper (Vipera ammodytes) in natural setting, Turkey.

Christophe Courteau / Peringuey's adder (Bitis peringueyi) buried in sand, flicking tongue, hunting, Namib Desert, Namibia.

Bruno D'Amicis / Sand viper (Cerastes vipera) sidewinding on sand dunes. Grand Erg Oriental, Kebili Governorate. Tunisia.

Chris Mattison / Sidewinder (Crotalus cerstastes) in sand dunes, Anza-Borrego Desert State Park, California, USA, May.

Daniel Heuclin / Sand Viper (Cerastes vipera) side winding across sand dunes, near Chingueti, Mauritania

Daniel Heuclin / Sand Viper (Cerastes vipera) in shade of grass, Erg Chigaga, Morocco

Pete Oxford / Eastern Diamondback Rattlesnake (Crotalus adamanteus), Little St. Simon's Island, Georgia

Edwin Giesbers / Horned viper {Cerastes cerastes} buried in sand, captive, from North Africa

Wild Wonders of Europe / Smit / Long-nosed / Sand viper (Vipera ammodytes) Djerdap National Park, Serbia, June 2009. BOOK & WWE OUTDOOR EXHIBITION.

Wild Wonders of Europe / Smit / Long-nosed / Sand viper (Vipera ammodytes) Djerdap National Park, Serbia, June 2009

Wild Wonders of Europe / Smit / Long-nosed / Sand viper (Vipera ammodytes) portrait, Djerdap National Park, Serbia, June 2009