Photographer’s description: “The Frog Bureau Investigator is Watching and is reporting back to D.C. This Pacific Tree Frog appeared on our window two days ago and very nicely posed for a photo on our ...

Red-eyed tree frog. Photo by Rhett Butler. In recognition of Amphibian Ark winning mongabay.com’s 2011 conservation award, our pictures of the day this week will focus on amphibians. The red-eyed tree ...

Red-eyed tree frog. Photo by Rhett Butler (2011). The red-eyed tree frog (Agalychnis callidryas) is one of the most colorful and best-known tree frogs (it is often used in advertisements). The ...

The red-eyed tree frog is harmless, but its colors make it look dangerous. Found in the rainforests of Costa Rica.

The red-eyed tree frog has become one of Costa Rica’s most iconic creatures, admired for its vibrant colors and widespread presence across the country. This frog, known for its striking red eyes, ...

Female red-eyed tree frogs are more than twice as likely to select a mate if they can feel the vibrations of their call instead of only hearing it. These small, bright-green frogs (Agalychnis ...

Even as little embryos in eggs, red-eyed tree frogs are totally badass. Researchers have discovered that when the embryos are attacked by a hungry predator, they can wiggle their way out of their eggs ...

On the foothills of the Andes in central Peru, a brilliantly colored frog lives out a fractured fairy tale. Once upon a time—specifically, one evening in November 2014—biologist Germán Chávez heard a ...

The glass frog’s unusual adaptation to bolster its camouflage could offer clues for preventing deadly blood clots in people. By Veronique Greenwood At first glance, you might miss the glass frog of ...