Of all vertebrates, gray foam-nest tree frogs exhibit the most extreme form ... and synchronously beat their back legs to help make a big wonderful nest,” where they deposit their sperm.

There’s no missing this striking amphibian, with its big bulging eyes that have an alien-like quality. The red-eyed green tree frog (Litoria chloris) is one of the most recognised and ...

Beelzebufo ampinga, the so-called "devil frog," may be the largest frog that ever lived. These beach-ball-size amphibians, now extinct, grew to 16 inches (41 centimeters) in length and weighed ...

The red tree frog (Litoria rubella) was thought to be a single species with the largest distribution of any Australian ...