Q. You once wrote that blue pigment is not known to exist in any terrestrial or freshwater animals with backbones. I found a blue bullfrog in a marsh in Virginia. It was mostly blue with some gray ...

An elusive tree frog with a never-before-seen color mutation, was spotted and photographed in a remote part of northwestern Australia Blue mutation magnificent tree frog (Ranoidea splendida). The ...

In a remote part of Australia, researchers recently stumbled upon an unusual, blue-skinned tree frog. This individual is a rare genetic mutant of the magnificent tree frog, a large amphibian that’s ...

What explains the vivid colors of the strawberry poison-dart frog? Piotr Naskrecki / Minden Pictures In the animal world as in fashion, bright color makes a bold statement. The vivid hues of the ...

Researchers found a new species of “robust” and color-changing tree frogs in China, according to a new study. Photo by Guohua Yu via Zoosystematics and Evolution A group of green-skinned creatures ...

In the dim twilight hours, many frogs may be capable of emitting a faint green or orange glow. A survey of hundreds of frogs in South America shows that far more frogs are biofluorescent than ...