We all know that cats have taken over the Internet. Grumpy Cat is just the latest in a long line of cat memes that have burst on the scene.

But cat owners have always wondered what their cats are thinking. Is my cat happy, sad, indifferent, or are they trying to take over the world?

Well, zefrank1 from BuzzFeed has transcribed the diaries of some felines for the world to see:

(Some language NSFW)