I'm always amazed by the strong personality displayed by my seemingly innocent dog. If he doesn't want to eat, he won't. If he doesn't want to sit on that chair, he won't. If he doesn't to...well, you get the idea. I don't have to spell it out for you.
I'm also impressed by his ability to sleep anywhere at any time. Why don't I have that skill? I mean, look at him. He looks so peaceful and content. Right there. On the floor.