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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).
Another adaptation they have is their fatal poison on and in their skin, which can kill small animals like birds and mice. This is a defensive adaptation that keeps the frog alive. Another adaptation is that poison dart frogs have small adhesive pads on their toes consisting of a groove that runs right around the pad. This helps the frog to climb vertically up objects such as trees to escape from a predator. The poison dart frog has adapted to living in a rainforest.