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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 Among the best known of rainforest amphibians are the tiny, but brilliantly colored poison dart (arrow) frogs [members of the Dendrobatidae family].2  These striking but slow-moving frogs secrete powerful toxins from glands on their backs and use their color to advertise their toxic composition to potential predators. Among the best known of rainforest amphibians are the tiny, but brilliantly colored poison dart (arrow) frogs [members of the Dendrobatidae family].