This informative book introduces young readers to the defining characteristics of the various groups of animals that make up the animal kingdom. The bodies of many animals, including several types of mammals, fish, reptiles, birds, and arthropods, are described in concise and easy-to-understand text. Full-color illustrations and amazing photographs help children begin to realize the vastness of the animal kingdom. Children will learn about: invertebrate animals and vertebrate animals; warm-blooded animals and cold-blooded animals; how animals move; the habitats of different animals; and how various animals find food.