The Argentine Tegu, or Giant Tegu, is a large lizard from South America that resembles, in some way, the monitor lizards (varanus species).  Tegus are stockier, with shorter necks and bead-like glossy skin.  Like monitors, they are also powerfully built with sharp teeth and claws.  The Argentine tegu is one of four subspecies of Tupinambis lizards, although there is much debate on whether this should be narrowed down to two species or expanded to five or six, depending on geographical distribution of the animal.  The name "tegu" means "lizard" in an Amazonian Indian language, and "Tupinambis" is actually an extinct Amazonian Indian tribe (Tupinambas).