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.

Frogs, like butterflies and salamanders, have what is called a "bi-phasic life cycle." They undergo metamorphosis to grow from their larval stage, as a non-reproductive tadpole that swims underwater, ...

When science teacher Sharry Dalbec took her students at Merritt Creek Academy out to explore the school pond during the first week of classes, she noticed something strange lurking beyond the surface ...

Have you ever wondered how city life affects animals like frogs? A new study reveals that urban Túngara frog tadpoles develop faster —but end up being smaller — than tadpoles from forests, probably ...

Paleontologists working in Patagonia have unearthed the oldest-known fossil of a tadpole—and it was a whopper, measuring in at more than six inches long, the size of an adult human hand. The specimen, ...