New research says that glass frogs can regulate their blood flow and increase transparency during sleep for protection against predators.

A new study on Northern glass frogs reveals that the amphibians can put about 89 percent of their red blood cells in their liver to make themselves transparent.

A species of glass frogs found in South and Central America has the rare ability to turn its transparent appearance on and off.

A new glass frog species has recently been discovered in Costa Rica, and it looks like a real-life Kermit the frog.

These tiny Latin American tree dwellers are stellar fathers and masters at camouflage, recent research reveals. The eggs of a female sun glass frog (Hyalinobatrachium aureoguttatum) are visible ...

The frogs also shrink and pack together most of their internal organs, Yao said. The research "beautifully explains" how "glass frogs conceal blood in the liver to maintain transparency," said Juan ...

A species of glass frogs found in South and Central America has the rare ability to turn its transparent appearance on and off.