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Poison dart frogs can be found in the tropical rainforests of Central and South America. Unlike many other amphibians, poison dart frogs are diurnal. Most species are terrestrial but a few are arboreal.oison dart frogs can be found in the tropical rainforests of Central and South America. Unlike many other amphibians, poison dart frogs are diurnal. Most species are terrestrial but a few are arboreal.
1 Whereas nearly all temperate frogs lay their eggs in water, the majority of rainforest species place eggs in vegetation or lay them in the ground. 2  By leaving the water, frogs avoid egg-predators like fish, shrimp, aquatic insects, and insect larvae. Among the best known of rainforest amphibians are the tiny, but brilliantly colored poison dart (arrow) frogs [members of the Dendrobatidae family].