Create an adorable frog crochet bookmark with this cute animal-themed pattern. This video guides you step by step through an ...

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 ...