The mountain yellow-legged frog was once the most abundant amphibian in Southern California's Sierra Nevada and Transverse Ranges. Just decades ago, it was hard to walk around many of California's ...

Amphibians are small vertebrates that need water, or a moist environment, to survive. The species in this group include frogs, toads, salamanders, and newts. All can breathe and absorb water ...

When glass frogs emerge during the rainy season, researchers at the Smithsonian Tropical Research Institute follow their migration out of the forest and along streams. These transparent leaf-lying ...