Many scientists believe the red-eyed tree frog developed its vivid scarlet peepers to shock predators into at least briefly questioning their meal choice. These iconic rain-forest amphibians sleep ...

A beloved symbol of biodiversity, the red-eyed tree frog, shown here in Panama, has evolved a flexible strategy for survival. Christian Ziegler Karen Warkentin, wearing tall olive-green rubber ...

While the bright coloration of this red-eyed tree frog doesn’t make the amphibious creature see red, it does provide an eye-catching display for humans who glimpse it in its rainforest habitat. In ...

a red-eyed tree frog, a domestic goat, a western lowland gorilla, and a human This story appears in the February 2016 issue of National Geographic magazine. “If you ask people what animal eyes ...

Costa Rica’s highways are packed with animal lovers searching for a glimpse of a sloth or red-eyed tree frog. Too many of the ...