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 creatures appearance, habitat, behaviors, and life cycle. Each book also presents a folk story that people have used to help explain the animals appearance or behavior. A basic exploration of the appearance, behavior, and habitat of frogs, the long-legged amphibians that hop. Also included is a story from folklore explaining why some frogs croak. Includes glossary, book references, websites, and index. Full-color photographs throughout.