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 ...

Scientists found a color-changing animal with green bones on an island in the Amazon rainforest and discovered a new species, a study said. Photo from Ferrão, Hanken, Oda, Campião, Penhacek, Anjos and ...

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 ...

While toad and frog classifications are often used interchangeably, their different characteristics set them apart. The Tennessee Wildlife Resources Agency (TWRA) stated that frogs are often found ...

Germán Chávez is no stranger to the Amazon rain forest, where he says "one can't help but get excited" by all the reptiles and amphibians that he has made a career out of studying. But when he came ...

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 ...

Scientists found a color-changing creature with “long” legs in a national park and discovered a new species, a study said. Photo from Guohua Yu via Pan, Liu, Chen and Yu (2025) In a national park of ...

On a remote island in Brazil, the sun began to set, and a color-changing creature began its nightly transformation. Its skin shifted hues, its pattern morphed but its green bones stayed the same.