We've all been giving a lot of credit to Miley Cyrus lately for practically inventing the twerk dance move. Well, she can't take a single piece of credit for it.

Turns out, twerking was invented before any of us were even BORN! A bird called the Sage Grouse actually invented the move. And, just like Miley, it's primarily for mating purposes.

During it's mating season the male grouse will twerk so much that it takes the remainder of the year building it's strength just so it can do it again next year. Who knew!

So, next time you want to impress your friends you can pull that little nugget of info out!