This book is based on the well-established book Biology of Spiders but is completely updated. It focuses on the biology and natural history of spiders in general - it does not deal with the identification of spiders. Virtually all aspects of spider biology are covered, from anatomy and physiology to neurobiology and behavior, or from spider venom to prey capture, and from silk production to complex web construction. The book will appeal not only to spider enthusiasts, professional arachnologists and zoologists, but to anyone with an interest in biology. It is written in a clear and straightforward style, making it easy to read for the general reader.