Suddenly one of the [wolf] pups caught my scent. He stopped in the midst of attempting to bite off a brother's tail and turned smoky blue eyes up toward me. What he saw evidently intrigued him. Lurching free of the scrimmage, he padded toward me with a rolling, wobbly gait; but a flea bit him unexpectedly before he had gone far, and he sat down to scratch it. At this instant an adult wolf let loose a full-throated howl vibrant with alarm and warning.... The idyllic scene exploded into frenzied action.                       Farley Mowat, Never Cry Wolf