Cats are pretty interesting creatures. They are haughty, arrogant and generally do as they please.
They can be kind and loving creatures, curling up with you when you're not well. They can be wickedly evil little critters when the mood strikes them as well. Just ask any mouse that's crossed a cat's path.
My own cat Goofball pretty much does whatever he pleases, whenever he pleases. If he doesn't like the fact you're not paying attention to him, he'll jump onto the screen door and slam it repeatedly until you acknowledge his Imperial Self.
Here are three videos of cats that are truly astounding, and there's not a screen door to be found. :)
A Cat and an Owl will amaze you.
"I'm gonna get that thing, whatever it is!"
All God's Creatures on one porch...