When the frog needs them for protection, they will force the bony “claws” to pierce through their skin, breaking away from ...

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 ...

Many scientists believe the red-eyed tree frog developed its vivid scarlet peepers to shock predators into at least briefly questioning their meal choice. These iconic rain-forest amphibians sleep ...