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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).
Golden poison dart frog. Some of the most beautiful things on this planet are also some of the most deadly. But that's the point -- by standing out with vibrant colors, a species can ward off potential predators. This is the strategy of these tiny, vibrantly colored, and highly toxic frogs.e might as well start our gallery with the most toxic of all poisonous frogs, and perhaps the most poisonous animal in the world, the golden poison frog. Even its scientific name, Phyllobates terribilis, shows that small things can be incredibly harmful.