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 ...

While poking around the garden the other day I found an adorable visitor, a small frog called a gray tree frog (Hyla versicolor) resting among the brightly colored flowers. This amazing little ...

Some ocean animals have a clever form of camouflage—they’re transparent. But being see-through is far less common on land. “And there’s a few reasons why that may be.” Jim Barnett is a postdoctoral ...

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 ...