The biodiversity of New World rain forests is demonstrated by the abundance of eagles that can be found in one place. This species (in addition to the Ornate hawk-eagle, the Guiana crested eagle, the Harpy Eagle and the Black-and-white Hawk-eagle) all range from Meso-America, through Amazonia and beyond in South America. All five are kept at the DWA, the only place to now do so. Also called the Tyrant hawk-eagle, this rarely-kept species has not yet bred in collections. Fertile eggs have been laid at the DWA.
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.