In a world occupied by creatures as diverse as gorillas, amoebas, herons, ticks, tapirs, and sea bass, the great variety of life in evidence throughout the animal kingdom is simply awe-inspiring. Scientists now believe that over 10 million species exist, inhabiting every corner of the earth--from the deserts of death valley to the depths of the Pacific Ocean to the arctic climes of Greenland. Some live for a day or less, others for more than a hundred...