Rod Williams / Casqued / Yemen chameleon {Chamaeleo calyptratus} male, captive, from Yemen

Michael Durham / Veiled Chameleon (Chamaeleo calyptratus) juvenile female held by nine year old Lucy

Michael Durham / Veiled Chameleon (Chamaeleo calyptratus) a juvenile female hunting, native to North Africa, Yemen to Saudi Arabia

Michael Durham / Veiled Chameleon (Chamaeleo calyptratus) a juvenile female hunting, native range is North Africa, Yemen to Saudi Arabia

Ingo Arndt / Veiled Chameleon (Chamaeleo calyptratus) close up of head

Ingo Arndt / Veiled Chameleon (Chamaeleo calyptratus) skin of male chameleon

Ingo Arndt / Veiled Chameleon (Chamaeleo calyptratus) portrait of male

Ingo Arndt / Veiled Chameleon (Chamaeleo calyptratus) male on twig

Ingo Arndt / Veiled Chameleon (Chamaeleo calyptratus) male chameleon threatening

Mark Moffett / Monarch Chameleon (Chamaeleo monachus) running over rocks, Socotra, Yemen

Ingo Arndt / Veiled Chameleon (Chamaeleo calyptratus) male's head

Joel Sartore / Photo Ark / Veiled chameleon (Chamaeleo calyptratus) extreme close up of eye looking around, Lincoln Zoo. Captive.