Some creatures blend in by sticking out. Learn more about glass frogs and the special way they hide their blood.

The amphibians are at the mercy of mining operations that are destroying their ecosystems, but local communities throughout South America are fighting back In Ecuador, a glass frog from a new ...

When glass frogs emerge during the rainy season, researchers at the Smithsonian Tropical Research Institute follow their migration out of the forest and along streams. These transparent leaf-lying ...

The northern glass frog, which ranges from southern Mexico to Ecuador, even conceals its blood to render its body more translucent, hiding nearly 90 percent of its red blood cells inside its ...