One day when I was about 11 years old, I was playing behind our big red barn. As I cornered the barn, I noticed a large groundhog facing away from me. He was munching on clumps of clover with the speed of a lawnmower. Occasionally, he rose onto his hind legs and survey his territory. As he did so, he froze to listen for potential danger. I, too, froze and watched him for about thirty minutes. Finally, my nose began to itch. When I reached to relieve my itch, the groundhog spotted my movement and ran into a hole underneath the back of the barn.