Scientists have discovered the world's first transparent frog, an incredible amphibian that allows you to see its internal ...

From the blue poison dart frog to the golden poison frog, here are the 8 most colourful and incredible frogs found across the world.

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 ...

Glass frogs also have a unique circulatory system, with veins that are closer to the surface of the skin. This allows the oxygen-rich blood to be visible through the skin ...