Jose B. Ruiz / European chameleon feeding on grasshopper. Sequence 2/3. {Chamaeleo chamaeleon} Spain

Jose B. Ruiz / European chameleon feeding on grasshopper. Sequence 3/3. {Chamaeleo chamaeleon} Spain

Ingo Arndt / Desert chameleon walking away from camera {Chamaeleo namaquensis} Namibia

Ingo Arndt / Warty chameleon male hidden behind branch {Chamaeleo verrucosus} Madagascar

Ingo Arndt / Casqued chameleon male {Chamaeleo calyptratus} Yemen

Lorraine Bennery / Brygoo's chameleon, / Leaf chameleon (Brookesia brygooi) tiny endemic chameleon. Madagascar.

Fabio Pupin / Ruwenzori side-striped chameleon, (Trioceros rudis), hanging from fern, Nyungwe Forest NP, Rwanda, December . Non-ex.

John Shaw / Namaqua chameleon (Chamaeleo namaquensis) catching larvae with its extended tongue. In the Namib desert near Swakopmund, Namibia.

Brian Bevan / Male Jackson's chameleon (Trioceros jacksonii) on a branch, looking around with turret eyes, UK. Captive, native to East Africa.

Philippe Clement / Panther chameleon (Furcifer pardalis) in tree, showing rotating eyes. Captive, native to Madagascar.

Brian Bevan / Juvenile Jackson's chameleon (Chamaeleo jacksonii xantholophus) feeding, flicking tongue to catch insects. Captive.

Klein & Hubert / Panther chameleon (Furcifer pardalis) in vegetation. Madagascar.

Michael D. Kern / Kaleidoscope pattern formed from picture of Johnstons Chameleon (Chamaeleo johnstoni) face and legs. Restricted for Editorial use until December 2015

Ann & Steve Toon / Namaqua chameleon (Chamaeleo namaquensis), being scanned for microchip, part of conservation project, Namib Desert, Namibia, April

Ann & Steve Toon / Namaqua chameleon (Chamaeleo namaquensis), Namib Desert, Namibia, April

Ben Cranke / Desert Chameleon (Chamaeleo namaquensis) catching insect, Namib desert, Namibia

Barrie Britton / Male Panther Chameleons (Furcifer pardalis) fighting. Nosy Be, Madagascar. Photograph taken on location for BBC 'Wild Madagascar' Series, January 2010

Barrie Britton / Nosy Be Pygmy Leaf Chameleon (Brookesia minima) female, world's smallest reptile. Nosy Be, Madagascar. Photograph taken on location for BBC 'Wild Madagascar' Series, January 2010

Michael D. Kern / Panther chameleon (Furcifer pardalis) coloured blue, walking along branch, captive, from Madagascar

Michael D. Kern / Panther chameleon (Furcifer pardalis) striped red, green and brown, on branch, captive, from Madagascar

Daniel Heuclin / Antsingy leaf chameleon (Brookesia perarmata) sitting on branch, Tsingy de Bemahara, Madagascar. Endangered species.

Daniel Heuclin / Antsingy leaf chameleon (Brookesia perarmata) sitting on branch, Tsingy de Bemahara, Madagascar. Endangered species.

Daniel Heuclin / Antsingy leaf chameleon (Brookesia perarmata) Tsingy de Bemahara, Madagascar. Endangered species.

Bernard Castelein / Bearded Dwarf Chameleon (Rhampholeon brevicaudatus) crawling over leaf litter, Jozani Chwaka Bay NP, Zanzibar, Tanzania

Alex Hyde / Panther chameleon close-up of skin {Furcifer pardalis} green colouration, Madagascar.

Alex Hyde / Panther Chameleon {Furcifer pardalis} close-up of skin, green colouration. Masoala Peninsula National Park, north east Madagascar.

Alex Hyde / Panther Chameleon {Furcifer pardalis} walking along branch on coast, Masoala Peninsula National Park, north east Madagascar.

Alex Hyde / Panther Chameleon {Furcifer pardalis} climbing along branch on beach, Masoala Peninsula National Park, north east Madagascar.

Alex Hyde / Close up of coiled tail of Parson's chameleon {Calumma parsonii} showing scales and strong green colouration. Tropical rainforest, Masoala Peninsula National Park, north east Madagascar.

Alex Hyde / Close up of Parson's chameleon {Calumma parsonii} foot gripping branch. The 5 toes of each foot are fused into opposing groups in a 2:3 arrangement. Madagascar.

Alex Hyde / Parson's chameleon {Calumma parsonii} close-up of eye with brown coloured skin. Tropical rainforest, Masoala Peninsula National Park, north east Madagascar.

Visuals Unlimited / Usambara three-horn chameleon (Chamaeleo deremensis)

Ann & Steve Toon / Namaqua / Desert chameleon (Chamaeleo namaquensis) Namib desert, Namibia, Africa

Nick Garbutt / Stump-tailed Leaf Chameleon (Brookesia superciliaris) on white background, from rainforest leaf-litter. Masoala National Park, Madagascar.

Nick Garbutt / Stump-tailed Leaf Chameleon (Brookesia superciliaris) in rainforest leaf-litter, eyes pointing in different directions. Masoala National Park, Madagascar.

Nick Garbutt / Male Panther Chameleon (Furcifer pardalis) in aggresive posture, displaying at its own reflection in a mirror. Masoala National Park, north east Madagascar.

Nick Garbutt / Male Panther Chameleon (Furcifer pardalis) feeding on Preying mantis in beach side vegetation. Bay of Antongil, Masoala Peninsula National Park, north east Madagascar.

Nick Garbutt / Male Panther Chameleon (Furcifer pardalis) catching Praying mantis in beach side vegetation. Bay of Antongil, Masoala Peninsula National Park, north east Madagascar.

Nick Garbutt / Male Panther Chameleon (Furcifer pardalis) stalking prey in beach side vegetation. Bay of Antongil, Masoala Peninsula National Park, north east Madagascar. Did you know? Chameleons don't change colour...

Stephen Dalton / Casqued / Veiled / Yemeni chameleon (Chamaeleo calyptratus) catching insect with extended tongue, controlled conditions

Stephen Dalton / Casqued / Veiled / Yemeni chameleon (Chamaeleo calyptratus) portrait, controlled conditions

Stephen Dalton / Casqued / Veiled / Yemeni chameleon (Chamaeleo calyptratus) catching cricket with extended tongue, controlled conditions

Stephen Dalton / European chameleon (Chamaeleo chamaeleon) catching a fly, controlled conditions

Wild Wonders of Europe / Ziegler / Juvenile African chameleon (Chamaeleo africanus) on twig, Southern Peloponnes, Greece, May 2009. WWE INDOOR EXHIBITION

Stephen Dalton / Veiled / Yemeni casqued chameleon {Chamaeleo calyptratus} catching cricket with tongue, controlled conditions, from Arabia

Stephen Dalton / Veiled / Yemeni casqued chameleon {Chamaeleo calyptratus} catching cricket with tongue, controlled conditions, from Arabia

Stephen Dalton / European chameleon {Chamaeleo chamaeleon} catching insect with tongue, controlled conditions, from Europe

Wild Wonders of Europe / Zankl / Mediterranean / Common chameleon (Chamaeleo chamaeleon) climbing between plant stems, Tukey, August 2009