In North America, the Teiid family of lizards is represented by rather small racerunners and whiptails, which have the appearance of “typical lizards”. In South America, Teiids occur in much greater variety. One of the most specialized is the semi-aquatic Caiman lizard, named for its crocodilian-like scales. Growing up to four feet long, often with a bright orange head contrasting with a greenish body, it might present a ferocious appearance. Its diet, however, consists almost entirely of snails, which it crushes with enormous molar-like teeth.