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 ...

A spectacular, under-the-radar private reserve on the Central Pacific coast of Costa ... frog — was spotted here. Look for transparent glass frogs near water sources and red-eyed tree frogs ...

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 ...

Before she started her PhD, she went to Costa Rica to learn more about the tropics and look for a research topic. The red-eyed tree frog’s terrestrial eggs caught her interest. She visited the ...