Daniel Heuclin / Blue iguana (Cyclura lewisi) captive, endangered species occurs in Cayman Islands.

Roy Mangersnes / Marine iguanas (Amblyrhynchus cristatus) basking on rock next to skeleton of one which starved to death. Unusually warm El Nino waters have killed a lot of the algae which is the food for these iguana...

Roy Mangersnes / Coastal scene on Fernandina Island, with small group of Marine iguanas (Amblyrhynchus cristatus). Galapagos. April 2016. Normally there would be a much larger group but El Nino weather has killed off...

Denis-Huot / Agama (Agama agama) male, Tsavo East National Park, Kenya

Roland Seitre / Grand Cayman Blue Iguana (Cyclura lewisi), adult that has been reintroduced to the wild from captive breeding programme. Endangered species.

Laurie Campbell / Slow worm (Anguis fragilis) female with newborn young on rock face, controlled conditions, Berwickshire, Scotland, July

Pete Oxford / Cuban rock iguana (Cyclura nubila) Jardines de la Reina National Park, Cuba, Caribbean

Andy Rouse / Two Marine Iguana (Amblyrhynchus cristatus) basking on a volcanic rock. Puerto Egas, Galapagos, September.

Tim Laman / Marine Iguanas (Amblyrhynchus cristatus) on the south coast of Espanola Island, Galapagos, Vulnerable species

Michele Westmorland / Cuban rock iguana (Cyclura carinata) walking in the sand, Iguana reserve on Little Water Cay, Turks and Caicos, Caribbean. Endangered

Wild Wonders of Europe / Ziegler / Peloponnese wall lizard (Podarcis peloponnesiacus) under rock, The Peloponnese, Greece, May 2009

Wild Wonders of Europe / Ziegler / Peloponnese wall lizard (Podarcis peloponnesiacus) on rock, The Peloponnese, Greece, May 2009