Blue poison dart frog (Dendrobates azureus).

Blue poison dart frog (Dendrobates azureus). The blue poison dart frog is a colorful frog found in the rainforests of Suriname, a country located in the northeastern part of South America. The blue poison dart frog uses its colors to warn predators of its toxic skin.

A new study published in the current issue of The Proceedings of the National Academy of Sciences reports that poison dart frogs, as well as the Mantella poison frogs of Madagascar, derive their toxicity from the ants they eat. Specifically, both groups are frogs are capable of storing ants' toxic alkaloid molecules in their glands without being harmed.