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 ...

Red-eyed tree frogs rely on a unique blend of color and stillness to disappear into rainforest foliage. When resting, their bright markings fold away, creating a perfect leaf-like disguise. Predators ...

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, ...

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

Five-day-old red-eyed treefrog embryos are tightly curled inside dehydrated eggs packed closely together. It’s dry enough to make them begin to hatch early amid heating. Karen M. Warkentin As the frog ...