Foothill yellow-legged frogs are striking stream-dwelling amphibians with a distinctive lemon-yellow color under their legs. They live in Pacific drainages from the upper reaches of the Willamette ...

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 ...

Seen from below, their undersides are “flesh-colored” while their fingertips and toes are “pale yellow.” Several views of a Gracixalus weii, or Wei’s tree frog. Photos from Shize Li via ...