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 ...

Researchers know frogs were hopping around as far back as 217 million years ago. But exactly how and when they evolved to begin as tadpoles remains unclear. The oldest-known tadpole fossil found ...

Call it a grand-phibian. Scientists have unearthed a fossil of the world’s oldest tadpole in Argentina — a shock finding that could alter our understanding of amphibian evolution, experts say.

At about a half foot (16 centimeters) long, the tadpole is a younger version of an extinct giant frog. “It's starting to help narrow the timeframe in which a frog becomes a frog,” said Ben ...