Caimans are reptiles that are closely related to their Central and South American neighbors, the alligators. Adultcaimans are usually four to six feet (1.8 m) in length.
2002,International Wildlife Encyclopedia: Brown bear - Cheetah, 3rd Edition,page 358,
Thecaimans are found in South America, mainly in the Amazon basin, with one species extending into the southern part of Mexico and another reaching northern parts of Argentina.
2010, Carrol L. Henderson,Mammals, Amphibians, and Reptiles of Costa Rica: A Field Guide,page164:
Newly hatchedcaimans eat insects. Youngcaimans are eaten by Jabirus, Wood Storks, Great Egrets, and raccoons. Adultcaimans have no predators except human poachers.