If there's one thing humans want more than living forever, it's being thin forever. Mmmm, who has that power? Who never eats and drinks blood that has no calories? Oh, that's right, us! Yet while they start a diet every Monday, the call of fast food beckons, and breathers can't resist. Nor can their dogs, apparently. Rover here was small and slim before humans introduced him to hamburgers and fries. Blood might make a messy dinner, but at the end of it you're still a size zero.