I followed his gaze and said "Honey, that's a chipmunk."
It turns out we have the Eastern Chipmunk in the yard. We are at the extreme, extreme, extreme edge of their range, so amusingly enough, they are generally found on one side of Raleigh, and not the other. Bein' on the north side, we get chipmunks. Go figure.
He's cuter 'n hell, of course.