Cody, our Chocolate Lab-looking shelter mutt will sell his soul for a carrot, sleeps flat on his back, and will periodically sprint laps around the backyard for no apparent reason. He's also one of the most vocal dogs I've owned- barks, yowls, grumbles, and growls. The grumbling is probably the funniest- he does it when he wants something, and DH and I will tear up from trying desperately not to laugh or give into him.