This popular series travels the planet to study these and other fascinating mammals, birds, reptiles, fish, and invertebrates. Beautiful photos are paired with STEM-appropriate text to examine the featured creature’s appearance, habitat, behaviors, and life cycle. Each book also presents a folk story that people have used to help explain the animal’s appearance or behavior. A basic exploration of the appearance, behavior, and habitat of hippopotamuses, the large African mammals. Also included is a story from folklore explaining why hippos live mostly in water.