Animal Engineers introduces readers to some of the animal kingdom's most amazing structures. Each book provides an in-depth look at how animals build and use the structure, as well as its effect on the surrounding environment. Explains the process and materials that beavers use to build dams. This book's colourful photos, clear text, and "A Closer Look" feature highlight the engineering that makes this structure such a marvel and helps beavers survive in the wild. AGES: 7 to 9 SELLING POINTS: . Table of contents . Glossary . Index . Additional resource lists . Quiz questions . "A Closer Look" special feature Hardcover Reinforced Library Binding