Dave Watts / Frilled Lizard (Chlamydosaurus kingii) with its neck frill out as a threat display. Queensland, Australia, November.

Dave Watts / Frilled Lizard (Chlamydosaurus kingii) with its neck frill out as a threat display. Queensland, Australia, November.

Daniel Heuclin / Moroccan spiny-tailed lizard (Uromastix acanthinurus) studio shot, captive, from Morroco

Daniel Heuclin / Eastern water dragon (Physignathus lesueurii) female, captive, from Eastern Australia

Nature Production / Thorny Devil / Mountain Devil (Moloch horridus) Australia

Ann & Steve Toon / Ground agama (Agama aculeata) feeding on insect prey, Kgalagadi Transfrontier Park, Northern Cape, South Africa, January

Elio Della Ferrera / Hump nosed lizard {Lyriocephalus scutatus} Sinharaja GR, Sri Lanka, endemic

Nick Upton / Starred Agama / Stellion (Laudakia stellio stellio) clinging to a rock. Lesbos / Lesvos, Greece, August.

Jouan & Rius / Anglehead lizard (Gonocephalus sp) walking along thin rainforest branch, Gunug Mulu NP, Borneo, Sarawak, Malaysia

Jouan & Rius / Anglehead lizard (Gonocephalus sp) walking along thin rainforest branch, Gunug Mulu NP, Borneo, Sarawak, Malaysia

Jouan & Rius / Anglehead lizard (Gonocephalus sp) Gunug Mulu NP, Borneo, Sarawak, Malaysia

Jouan & Rius / Anglehead lizard (Gonocephalus sp) Gunug Mulu NP, Borneo, Sarawak, Malaysia

Jouan & Rius / Anglehead lizard (Gonocephalus sp) Gunug Mulu NP, Borneo, Sarawak, Malaysia

Jouan & Rius / Green crested / fence lizard (Bronchocela cristatella) Gunug Gading NP, Borneo, Sarawak, Malaysia

Jouan & Rius / Green crested / fence lizard (Bronchocela cristatella) Gunug Gading NP, Borneo, Sarawak, Malaysia

Bernard Castelein / Spiny-tailed Lizard (Uromastyx hardwickii) camouflaged in mud, Rajasthan, India, March

Edwin Giesbers / Flying Dragon / Lizard (Draco volans) with throat pouch extended, standing on tree branch, Sarawak, Borneo, Malaysia

Edwin Giesbers / Green Crested Lizard (Bronchocela cristatella) camouflaged in green vegetation, Sarawak, Borneo, Malaysia

Edwin Giesbers / Green Crested Lizard (Bronchocela cristatella) climbing down tree trunk, Sarawak, Borneo, Malaysia

Edwin Giesbers / Green Crested / Fence Lizard (Bronchocela cristatella) in green tropical forest vegetation, Sarawak, Borneo, Malaysia

ASHISH & SHANTHI CHANDOLA / Indian spiny-tailed lizard (Uromastyx hardwickii) with prey, camouflaged against the earth, Kutch, Gujarat, India, April

Rod Williams / Eastern Water Dragons (Physignathus leseuri) Burleigh Heads, South Queensland, Australia, March

Ian Lockwood / Common Green Forest Lizard(Calotes calotes) juvenile, Sri Lanka,

Ian Lockwood / Common Green Forest Lizard(Calotes calotes) Sinharaja Forest Reserve, Sri Lanka, May

Mark Carwardine / Chinese / Thailand water dragon (Physignathus cocincinus) captive, from SE Asia

Michael D. Kern / Ornate uromastyx (Uromastyx ocelleta ornate) captive,

Michael D. Kern / Inland bearded dragon (Pogona vitticeps) captive, from Australia

Michael D. Kern / Sailfin water dragon (Hydrosaurus pustulatus) captive, from SE Asia

Michael D. Kern / Chinese water dragon (Physignathus cocincinus) captive, from Asia

Hanne & Jens Eriksen / Yellow spotted agama {Trapelus flavimaculatus} on stony ground, Oman, March

Hanne & Jens Eriksen / Yellow spotted agama {Trapelus flavimaculatus} in scrub {Dipterygium glaucum}, Oman, March

Hanne & Jens Eriksen / Spiny tailed lizard {Uromastyx aegyptius microlepus} climbing up onto rock, Oman, April

Hanne & Jens Eriksen / Spiny tailed lizard {Uromastyx aegyptius microlepus} climging up onto rock, Oman, April

Hanne & Jens Eriksen / Spiny tailed lizard {Uromastyx aegyptius microlepus} sunning on rock, Oman, April

Hanne & Jens Eriksen / Sinai agama lizard {Pseudotrapelus sinaitus} close-up, on rock, Oman, February

Hanne & Jens Eriksen / Sinai agama lizard {Pseudotrapelus sinaitus} close-up, on rock, Oman, February

Tim Laman / Portrait of a Comb-crested Agamid / Dragon Lizard (Gonocephalus liogaster) juvenile sleeping on a twig at night in the rainforest of Borneo.

Stephen Dalton / Flying dragon lizard (Draco volans) gliding, from Indonesia, controlled conditions

Stephen Dalton / Giant sailfin dragon lizard (Hydrosaurus pustulatus) running over water, from Indonesia, controlled conditions

Stephen Dalton / Flying dragon lizard (Draco volans) gliding, from Indonesia, controlled conditions

Tim Laman / Crested Green lizard (Bronchocela cristatella) climbing on undergrowth in the rainforest. Danum Valley Conservation Area, Sabah, Borneo, Malaysia.

Tim Laman / Head portrait of Bornean angle-headed lizard (Gonocephalus bornensis) on a tree trunk in lowland rainforest (endemic to Borneo) Danum Valley Conservation Area, Sabah, Malaysia.

Tim Laman / Bornean angle-headed lizard (Gonocephalus bornensis) on a tree trunk in lowland rainforest (endemic to Borneo) Danum Valley Conservation Area, Sabah, Malaysia.

Stephen Dalton / Close up of eye of Bearded dragon lizard (Amphibolurus barbatus) controlled conditions, native to Australia

Stephen Dalton / Close up of eye of Bearded dragon lizard (Amphibolurus barbatus) controlled conditions, native to Australia

Stephen Dalton / Bearded dragon lizard (Amphibolurus barbatus) controlled conditions, native to Australia

Stephen Dalton / Bearded dragon lizard (Amphibolurus barbatus) controlled conditions, native to Australia

Oriol Alamany / Broad-toed / Starred agama lizard (Laudakia / Agama stellio) El Qattar desert mountains, Wadi Rum Protected Area, Jordan

Oriol Alamany / Broad-toed / Starred Agama lizard (Agama / Laukadia stellio) Burrah Canyon, Wadi Rum Protected Area, Jordan, April 2009

Steven David Miller / Adult male Eastern Water Dragon (Physignathus leseurii) sunning beside edge of lake, Botanical Gardens, Bundaberg, Queensland, Australia.

Steven David Miller / Common Bearded Dragon / Eastern Bearded Dragon (Pogona barbata) warming in sun, Bundaberg, Queensland, Australia.

Steven David Miller / Common Bearded Dragon / Eastern Bearded Dragon (Pogona barbata) warming in sun, Bundaberg, Queensland, Australia

Patricio Robles Gil / Male Agama lizard {Agama atricollis} on tree trunk, Kruger NP, South Africa

Chris Gomersall / Male Namibian rock agama (Agama planiceps) on red sandstone, Damaraland, Namibia, November

Chris Gomersall / Female Namibian rock agama (Agama planiceps) on red sandstone, Damaraland, Namibia, November

Stephen Dalton / Flying lizard (Draco volans) gliding, controlled conditions, from Indonesia

Alan Watson / Greater spiny lizard / Armoured pricklenape (Acanthosaura armata) on tree buttress, lowland tropical rainforest, Khao Sok National Park, Surat Thani Province, Thailand

Alan Watson / Greater spiny lizard / Armoured pricklenape (Acanthosaura armata) on the buttresses of a tree, lowland tropical rainforest, Khao Sok National Park, Surat Thani Province, Thailand

Alan Watson / Greater spiny lizard / Armoured pricklenape (Acanthosaura armata) on buttress roots, lowland tropical rainforest, Khao Sok National Park, Surat Thani Province, Thailand

Angelo Gandolfi / Moroccan Spiny-tailed Lizard (Uromastix acanthinurus) female, Sahara, Morocco.

Angelo Gandolfi / Bedouin man with two Moroccan Spiny-tailed Lizards (Uromastyx acanthinurus), Morocco, Sahara. March 2007.

Angelo Gandolfi / Two Moroccan Spiny-tailed Lizards (Uromastyx acanthinurus), male (right, green) and female (left), Morocco.

Bernard Castelein / Indian spiny-tailed lizard (Uromastyx hardwickii), Tal Chapar Sanctuary, Rajasthan, India

Tony Phelps / Southern Rock Agama (Agama atra) male basking on wall, DeHoop NR, Western Cape, South Africa

Rod Williams / Southern Angle-headed Dragon (Gonocepalus / Hypsilurus spinipes) SE Queensland, Australia, March

Rod Williams / Eastern Water Dragon (Physignathus leseurii) feeding on grasshopper, Corrumbin, South Queensland, Australia, March

Tony Phelps / Southern Rock Agama (Agama atra) female basking on wall, DeHoop NR, Western Cape, South Africa

Hanne & Jens Eriksen / Egyptian spiny-tailed lizard (Uromastyx aegypticus microlepis) basking on rock, Muscat, Oman

Hanne & Jens Eriksen / Egypitan spiny-tailed lizard (Uromastyx aegypticus microlepis) head portrait, Muscat, Oman

Hanne & Jens Eriksen / Hadramaut agama {Laudakia adramitanus} sunning on stump, Dhofar, Oman

Hanne & Jens Eriksen / Hadramaut agama {Laudakia adramitanus} adult and juvenile sunning on tree stump, Dhofar, Oman

Hanne & Jens Eriksen / Hadramaut agama {Laudakia adramitanus} adult and juvenile sunning on tree stump, Dhofar, Oman

Kim Taylor / Male Namibian rock agama (Agama planiceps planiceps) portrait, Namibia, Africa

Kim Taylor / Namibian rock agama (Agama planiceps planiceps) female, digitally enhanced, Namibia, Africa

Kim Taylor / Namibian rock agama (Agama planiceps planiceps) male, Namibia, Africa

Rod Williams / Philippine sailfin lizard (Hydrosaurus pustulatus) captice, from The Philippines, Vulnerable

Steven David Miller / Ring-tailed dragon {Ctenophorus caudicinctus slateri} sunning, Watarrka (Kings Canyon) National Park, Northern Territory, Australia

Steven David Miller / Lesuer's / Eastern water dragon {Physignathus lesueurii} male sunning on log, Lane Cove National Park, New South Wales, Australia

Steven David Miller / Gilbert's dragon / Ta-ta lizard {Lophognathus / Amphibolurus gilberti} male, Kununurra, Western Australia

Steven David Miller / Thorny devil (Moloch horridus) sunning, Carnarvon, Western Australia

Steven David Miller / Lesuer's / Eastern water dragon {Physignathus lesueurii} male sunning on log, Lane Cove National Park, New South Wales, Australia

Steven David Miller / Ring-tailed dragon {Ctenophorus caudicinctus slateri} sunning, Watarrka (Kings Canyon) National Park, Northern Territory, Australia

Steven David Miller / Gilbert's dragon / Ta-ta lizard {Lophognathus / Amphibolurus gilberti} female, Kununurra, Western Australia

Bernard Castelein / Garden lizard (Calotes versicolor) on tree trunk, Keoladeo Ghana / Bharatpur NP, Rajasthan, India

Bernard Castelein / Garden lizard (Calotes versicolor) on tree trunk, Keoladeo Ghana / Bharatpur NP, Rajasthan, India

Juan Carlos Munoz / Comb crested dragon lizard {Gonocephalus liogaster} Danum Valley Forest Reserve, Sabah, Borneo, Malaysia

Juan Carlos Munoz / Comb crested dragon lizard {Gonocephalus liogaster} camouflaged on tree trunk, Danum Valley Forest Reserve, Sabah, Borneo, Malaysia

Juan Carlos Munoz / Comb crested dragon lizard {Gonocephalus liogaster} Danum Valley Forest Reserve, Sabah, Borneo, Malaysia

Nick Garbutt / Bornean angle-headed lizard (Gonocephalus bornensis) in rainforest habitat, Danum Valley, Sabah, Borneo, Malaysia

Jouan & Rius / Thorny devil (Moloch horridus) Central Australia

Robert Valentic / Gibber dragon lizard {Ctenophorus gibba} male watching out for raptors, Maree, South Australia

Robert Valentic / Inland / Central bearded dragon lizard {Pogona vitticeps} male defensive threat display, Kulgera, Northern Territory, Australia

Robert Valentic / Burns' dragon lizard (Amphibolurus / Lophognathus burnsi) male prepares to fight rival male, Walgett, New South Wales, Australia

Robert Valentic / Eastern bearded dragon lizard {Pogona barbata} male enacting a defensive display towards a perceived threat, West Wyalong, New South Wales, Australia

Tony Heald / Mocquard's Eyebrow Lizard {Phoxophrys cephalum} in rainforest at night, Mt Kinabalu, Sabah, Borneo, September

Tony Heald / Mocquard's Eyebrow Lizard {Phoxophrys cephalum} in rainforest at night, Mt Kinabalu, Sabah, Borneo, September