Watch on Soap2day. Evolving over 220 million years ago, lizards are both terrestrial and aquatic. Found everywhere in the world, they are cold-blooded, carnivores and herbivores with over 6,000 species including: Chameleons, Chuckwallas, Desert Iguanas, Frill-Necked Lizards, Beaded Lizards (which are venomous), Geckos, Gila Monsters and Komodo Dragons. They are older than time itself and will long outlive mankind.