Many scientists believe the red-eyed tree frog developed its vivid scarlet peepers ... These iconic rain-forest amphibians sleep by day stuck to leaf-bottoms with their eyes closed and body ...

“If you hear frogs at one of these lakes, it’s the Pacific tree frog,” Knapp said. But that doesn’t mean that they’re not ...

This story appears in the March 2017 issue of National Geographic magazine. These frogs put the “group” in “group sex”—and that helps them thrive. Of all vertebrates, gray foam-nest tree ...

The Sierra Nevada Yellow-legged frogs were almost wiped out of Yosemite National Park. But these scientists mounted a wildlife comeback.

A juvenile American tree frog (Hyla cinerea) of unknown age was presented to the Exotic Service at the Tufts University School of Veterinary Medicine for an acute onset of swelling of the left ...