Living Thing & Their Habitats Mammals Book is designed to educate readers about the good world of animals and their habitats by serving as an educational and thorough guide. Its objective is to formally educate and engage readers about the wonders of the animal world.The book begins by defining a living thing, giving readers an understanding of the larger framework in which mammals exist. In order for readers to understand the various ecosystems around the world, it then explores the various environments in which animals live. The chapter on what animals eat in the book stresses the interdependence of all living things while also revealing some fascinating food patterns. Mammals are very fascinating because of their amazing changes and life cycles, which are discussed in the section on how animals move and grow.