Describes the world of animal classification, physiology, behavior, and communication. Today the animal sciences, zoology, form the knowledge basis for such diverse disciplines as human physiology and nutrition; genetics and animal breeding, and the exciting field of wildlife ecology. For the first time the scientific discoveries that provide insight into the nature of animal classification, physiology and behavior are brought together in one program. Arranged chronologically, each discovery is presented with clear graphics and High Definition footage. Spanish subtitles. .