In a rainforest, small animals survive by hiding. By blending in with their environment until danger passes, many unique ...

Above, the real deal; below, the clay models used to test predators' reactions to local and foreign frog markings. Sometimes, you have to make a thousand frogs from modelling clay to make your point.

Natural selection has played a role in the development of the many skins patterns of the tiny Ranitomeya imitator poison dart frog. Natural selection has played a role in the development of the many ...

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