The trick of hiding blood while sleeping appears to be unique to the frogs. “It’s just this really amazing, dynamic form of camouflage,” said White.

Glass frog photographed during sleep and while active, showing the differences in red blood cells within the circulatory system. Jesse Delia via AMNH When a tiny glass frog dozes off to sleep ...

To patch the holes in their invisibility cloak, glass frogs deploy a radical option. In the hour or so before they drift off to sleep ... redness behind a veil of white. The frogs’ feint ...

The trick of hiding blood while sleeping appears to be unique to the frogs. “It’s just this really amazing, dynamic form of camouflage,” said White.

The newly discovered frog, too, is named after the same mountains; its species name, pulchridormientes, is a combination of two Latin words meaning “beautiful” and “sleeping.” Scientists ...

A new species of rain frog was discovered in the premontane forests of the Peruvian central Andes. Referring to the mountain chain's local name, the amphibian's name translates to 'Sleeping Beauty.' ...

The trick of hiding blood while sleeping appears to be unique to the frogs. “It’s just this really amazing, dynamic form of camouflage,” said White. The Associated Press Health and Science ...