How does a cuttlefish avoid a hungry shark? Animals need defenses. Some of the tricks they use to stay safe can be surprising! Learn about some of the most clever and curious defenses in the animal world. This nonfiction book includes important text features such as a glossary, index, and table of contents to engage students in reading as they develop their comprehension, vocabulary, and literacy skills. The Reader's Guide and culminating activity direct students back to the text as they develop their higher-order thinking skills. Check It Out! provides resources for additional reading and learning. With TIME For Kids content, this book aligns with national and state standards and will keep grade 4 students engaged in learning.