One week at overnight camp (Parker's day care provider also boards dogs, so he got to hang with his friends every day) has exhausted my dog. This is a common behavior in dogs, apparently. He was overjoyed to see me again in a way I've never seen in a human older than four, but as soon as we got home he climbed into his crate and passed out. (Actually he ate two entire bowls of kibble first.)
Action shot: