Hundreds of the animals were loaded into coolers and hiked into the backcountry.

Cheers went up in March when the U.S. Fish and Wildlife Service announced plans to secure critical habitat for the threatened Chiricahua leopard frog. But there are a few groans, too, most notably ...

Nearly 20 years ago, the last known Cascades frog disappeared from Lassen Volcanic National Park. Now researchers are bringing them back, hoping the frogs can stage a comeback. Lassen Volcanic ...

Green and golden bell frogs used to be everywhere in Australia, until a deadly virus reduced their range by 90%. Then Anthony Waddle stepped in.