I've been continuing my observations of Kody and I've noticed that he always sleeps very lightly. He can be in what appears to be a deep sleep, but he'll wake if he hears anything suspicious. Usually I can't even hear it.
Also, I've tried numerous times to get pictures of him while he's sleeping because he's so cute, and every time I do, no matter how quiet I am, as soon as I turn toward him he opens his eyes and starts wagging his tail.