In this chapter, students gain a basic understanding of animals’ key external body parts and how different animals use them to survive or to make their lives easier. It explores specific ways animals use their external body parts to find and catch food. The chapter investigates how animals use their body parts to protect themselves from predators. It looks at the structure and function of plant parts. The chapter focuses on the engineering practice by encouraging students to design a solution to a human problem using what they have learned about plants and animals. Students learn that animals have body parts that help them find and catch food. Students begin to wonder how other animals use their own body parts to help them find and catch food.