Perhaps the most fascinating fact about the hairy frog is its formidable, hidden claws. Wolverine, a character in the Marvel movies, can extend sharp claws and then retract them. His claws pierce ...

Glass frogs are named for their translucent skin, which helps display their internal organs from underneath (you can even watch their hearts beat). Although there are more than 150 different glass ...

The Glass Frog (Centrolenella colymbiphyllum) has skin so translucent that you can watch its heart beating. Carl C. Hansen, Smithsonian Institution When I started working on this frog blog post ...

What is the dyeing poison frog? One of the most recognizable frogs in the world, the dyeing poison frog is a species of poison frog. It’s known for its vibrantly colored skin—yellow on its back and ...