Trapdoor spiders secure their burrow with a trapdoor. How many designs are possible? Find out as this book introduces young readers to trapdoor spiders, the burrow-dwelling spiders that are quite the structural engineers Students will learn about trapdoor spiders' sizes, behaviors, habits, dietary needs, methods of defense, anatomy, and colors. Reproduction and spiderling development are also introduced. A diagram of a spider's body aids readers...