It was 1944, and an Allied pilot was flying a B-17 bomber over Nazi territory. Suddenly, the plane began to rattle. He checked his instruments—they were going haywire. As the rattling and noises continued, he glanced out the cockpit window and saw something: a creature, about three feet tall, gray and hairless. Its teeth were sharp and its eyes were red. The pilot soon spied something else, an owl-like creature hammering at the airplane’s nose and dancing a gleeful little jig. The crew started some “fancy flying,” and managed to…