Claudio Contreras / Catalina Desert Iguana (Dipsosaurus catalinensis), Catalina (Santa Catalina) Island, Loreto Bay National Park, Gulf of California (Sea of Cortez), Baja California, Mexico, May, Second place in Visions...

Chris Mattison / Desert Iguana (Dipsosaurus dorsalis) Joshua Tree National Park, California, USA, May.

Chris Mattison / Desert Iguana (Dipsosaurus dorsalis) male and female in courtship bout, Joshua Tree National Park, California, USA, May.

Tui De Roy / Galapagos land iguana (Conolophus subcristatus) in open volcanic habitat. Isabela Island, Galapagos, Isabela Island, Galapagos, Ecuador, June.

Daniel Heuclin / Desert Iguana (Dipsosaurus dorsalis dorsalis) Death Valley National Park, California USA

Daniel Heuclin / Desert Iguana (Dipsosaurus dorsalis dorsalis) Death Valley National Park, California USA

Daniel Heuclin / Northern Chuckwalla (Sauromalus obesus) male, Coachella valley, California, USA

John Cancalosi / Flat tailed horned lizard {Phrynosoma m'calli} California, USA

John Cancalosi / Desert Iguana (Dipsosaurus dorsalis) basking on rock, Arizona, USA, captive

Philippe Clement / Sonoran Spiny-tailed Iguana (Ctenosaura hemilopha macrolopha) basking on Ocotillo (Fouquieria splendens) cactus. Arizona, USA. (Native to Mexico). Captive.

Philippe Clement / Sonoran Spiny-tailed Iguana (Ctenosaura hemilopha macrolopha) basking on rock. Arizona, USA. (Native to Mexico). Captive.

Philippe Clement / Sonoran Spiny-tailed Iguana (Ctenosaura hemilopha macrolopha) basking on rock, Arizona, USA. Captive.