Not to spoil it, but the winner is Dog! Though, this New York Times article is a few months old (December), I couldn’t help but sharing. Check out the article to see how people that walk with dogs benefit. I can tell you from my own expierence, I have been rescheduling my Monday hike at Runyon with Eric for the last three weeks, but have yet to flake on walking Romeo. Granted, Eric has not threatened to pee on my floors. The Best Walking Partner: Man vs. Dog