This book includes all the key information needed to classify animals, study the subject of life cycles, and understand food webs. It is also packed with fascinating topics that help expand readers' knowledge about the animal kingdom. What are invertebrates and vertebrates? Understand how animals are classified into groups including mammals, birds, fish, reptiles, amphibians, insects, and others, and learn what characteristics are used to classify them. Discover how animals are either carnivores, herbivores, or omnivores, and learn how an animal's body is adapted for hunting or foraging and for eating a particular diet. Learn all about producers, consumers, and food webs. Enjoy an in-depth look at the fascinating life cycles of blue whales, toads, stag beetles, and swallows. Meet the scientist Jane Goodall and learn how she changed the future of studying apes, discover how birds evolved from dinosaurs, and explore the evolution of dogs from wild wolves to the pet dogs who share our homes. The book includes stunning photos, activities, critical thinking questions, and is supported by downloadable worksheets and other resources.