But what about other animals yawning? In the video above, a cute little rain frog looks ready for bed. It yawns big, but it’s not for the same reason as humans yawn. When a frog yawns ...

Here’s how it works. Why it's awesome: Move over grumpy cat — say hello to the grumpy frog. In addition to being a famous meme, black rain frogs have plenty of unusual traits that make them ...