SPIDERS live on every continent and in almost all terrestrial habitats capable of supporting life. Some spiders have ventured into the world of freshwater, and a few can even tolerate salt water. There is a huge variety in color among species, and sizes can vary from smaller than a grain of rice to exceeding the span of an adult's hand. Many are beautifully marked and fascinating to look at. For some, such as the crab spiders, the coloration serves as camouflage, but for others scientists are still investigating their purpose. In this book, readers can also explore their fascinating and complex behavior patterns. Naturalists young and old will enjoy getting the facts about spiders' physical structure and growth, silk production and web-building, fangs and venom, camouflage, webs, tunnels and traps, courtship and reproduction, and self-defense. SPIDERS opens a door onto the fascinating life styles and habits of these most engaging creatures.