Wood frogs are highly dependent on environmental conditions to determine whether they are active. After fattening up during ...

Imperiled northern red-legged frogs need to cross a 4-lane highway in Oregon to lay their eggs. Every winter, volunteers carry them across.

Scientists suggest female frogs listen for changes in the male calls as a signal for when it's warm enough to mate.

Each winter, Portland volunteers "taxi" Northern red-legged frogs to and from their egg-spawning ground. The service protects them from becoming roadkill on a highway. In Portland, Oregon, where I ...