Animals are living things that eat food, move, sense, and react to the world around them. One animal might look vastly different from another--one might live underwater and another on grasslands--but they have features in common, such as using teeth to capture prey. Readers uncover a variety of different animal structures and survival instincts throughout this volume, as creatures as small as earthworms and as big as sharks are featured and compared and contrasted. Vivid photographs, helpful diagrams, and accessible text bring readers directly into the animal kingdom, as they learn about the variety of animal structures and the important roles each of their bodies play for survival.