The Iguanidae is a family of lizards composed of the iguanas, chuckwallas, and their prehistoric relatives, including the widespread green iguana.
Iguanidae
Image: Marine Iguana Espanola
Image: Fiji banded iguana in Vienna Zoo on 2013 05 12
Image: Ctenosaura defensor (6138652398)
Lizard is the common name used for all squamate reptiles other than snakes, encompassing over 7,000 species, ranging across all continents except Antarctica, as well as most oceanic island chains. The grouping is paraphyletic as some lizards are more closely related to snakes than they are to other lizards. Lizards range in size from chameleons and geckos a few centimeters long to the 3-meter-long Komodo dragon.
Lizard
A young Mediterranean house gecko in the process of moulting.
Red tegu (Tupinambis rufescens) skull, showing teeth of differing types
Adhesive pads enable geckos to climb vertically.