You hear a hissing sound. That's a warning! Hissing says that an animal is ready and willing to attack. Many animals from cats to snakes to tarantulas hiss before they attack as a defense against predators. This book explores the wild world of hissing animals. Readers will learn how animals use this amazing defense mechanism to keep them safe in the wild. This book explores essential life science concepts of adaptations and defenses using high-interest text and vibrant photographs of creatures that hiss.