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Most species of poison dart frogs are small, sometimes less than 1.5 cm (0.59 in) in adult length, although a few grow up to 6 cm (2.4 in) in length. They weigh 1 oz. on average. Most poison dart frogs are brightly colored, displaying aposematic patterns to warn potential predators.oison dart frogs are endemic to humid, tropical environments of Central and South America. These frogs are generally found in tropical rainforests, including in Bolivia, Costa Rica, Brazil, Colombia, Ecuador, Venezuela, Suriname, French Guiana, Peru, Panama, Guyana, Nicaragua, and Hawaii (introduced).
Poison dart frogs are sometimes called poison arrow frogs or dart poison frogs or poison frogs. All of these names refer to the fact that these frogs secrete poisons.The poison from poison dart frogs is used by Central and South American Indians on the darts they use for killing animals.he poison from the poison dart frogs contain toxins that dull the nerves and can produce heart and respiratory failure. The poison that some species secrete is the most powerful animal poison known. As little as 2 micrograms of the poison can kill an adult human. Each frog contains nearly 200 micrograms.