Daniel Heuclin / Red coachwip or Red racer (Masticophis flagellum piceus) eating Sceloporus lizard, Catalina foothill, Arizona, June.

Piotr Naskrecki / Spiked Spider (Gasteracantha sp) their abdomen, or opisthosoma, is heavily sclerotized and armed with hard spines possibly to protect against birds and lizards, Solomon Islands

Jim Brandenburg / Desert Spiny Lizard (Sceloporus magister) sunning on rock, Monument Valley National Monument, Arizona

Enrique Lopez-Tapia / Spiny-tailed lizard (Uromastyx hardwickii) near its excavated burrow, Rajasthan, India.

Cyril Ruoso / Spiny Leaf Chameleon (Brookesia decaryi) camouflaged in leaf litter, Madagascar

Sean Crane / Black Spiny-tailed Iguana (Ctenosaura similis), Ambergris Caye, Belize

Andrew Snyder / Bocourt's Emerald Lizard (Sceloporus schmidti / smaragdinus) male in breeding colours, held in human hand, Cusuco National Park, Honduras, Central America.

Alain Dragesco-Joffe / Spiny tailed agama (Uromastix acanthinurus) adult, Tunisia, Sahara.

Emanuele Biggi / Eastern fence lizard (Sceloporus undulatus) adult male with iridescent throat, Southern Illinois, USA. April.

Claudio Contreras / Smith's rosebelly lizard (Sceloporus smithi), Playa Morro Ayuta, Oaxaca state, southern Mexico, August

Brian Bevan / Male Ornate mastigurex (Uromastyx ornatus) basking on a rock, UK. Captive, native to the Middle East.

Daniel Heuclin / Checkered garter snake (Thamnophis marcianus) eating Yarrow spiny lizard ( Sceloporus jarrovii) Chiricahua mountains. Arizona, USA. May. Controlled conditions