Lol. Cats are pretty smart critters and they're overly cautious when it comes to approaching unknown situations. Dogs on the other hand are far more curious and will tend to go check out stuff without much thought.
You notice how cats are always sneaking up on you. They always do this thing where you turn your back where they pounce on like Lions and Tigers would. That's how you know they're schemers. On top of that, they're great at manipulating humans. I swear to you that cats can use the Jedi mind trick on almost anyone and it works.
Cats are the unpredictable ones - even when you've raised a cat from day one, it doesn't mean it'll acknowledge you as it's owner may tend to attack their owners. Dogs are anything but dumb - my dog knows how to open my house door, knows how to honk my car horn and a myriad of other stuff that I never once taught it. As a matter of fact, I never trained any of mine but they understand almost anything I say.