Tegu

Lizard

Tupinambis is a lizard genus which belongs to the family Teiidae, and contains seven described species. These large, South American lizards are commonly referred to as tegus; Tupinambis merianae (Argentine Black and White Tegu), Tupinambis rufescens (Red Tegu), and Tupinambis teguixin (Colombian Black and White Tegu, Gold Tegu, or Common Tegu) are all common in the pet trade. Tegus that have escaped or have been illegally released have adapted to life in the wild in some of the more remote areas of South Florida.

http://en.wikipedia.org/wiki/Tegu