Researchers know frogs were hopping around as far back as 217 million years ago. But exactly how and when they evolved to ...

Southern Darwin's frog tadpoles grow up inside the vocal sacs of their fathers and are 'born' through their mouths as froglets. The brooding dads made an incredible 7,000-mile journey by boat ...

Frog tadpoles have a remarkable ability to regenerate their tissues—a process that requires a lot of energy, fast. In other animals, rapidly growing tissues, such as tumors and embryos, are thought to ...

An unlucky frog seems to have hopped in front of a photo taken of the LADEE launch at Wallops Island Flight Facility in Virginia on Sept. 6. Jeremy Eggers from the Wallops/Mid-Atlantic Regional ...