You know the feeling. It’s getting close to bedtime, you get sleepy, and you start yawning automatically. You may even find ...

One of the cutest butts in the natural world undoubtedly belongs to the desert rain frog. It’s small, saggy, and looks like Hank Hill‘s bottom in “King of the Hill.” There’s just ...

Many scientists believe the red-eyed tree frog developed its vivid scarlet peepers to shock predators into at least briefly questioning their meal choice. These iconic rain-forest amphibians sleep ...