This 2nd edition is a complete re-write of the 1st edition in 1993. It reflects developments in knowledge since the 1st edition and includes many new chapters and contributors. Concern over the welfare of confined animals is continuing to increase and extends not only to farm and zoo animals, but also to laboratory and companion animals. This book focuses on environmentally induced stereotypes, rather than drug induced or neurologically based stereotypes and discusses why captive animals perform these stereotypes. It also examines what this behaviour can tell us about animal welfare, options for prevention and cure and assesses future research directions and implications for animal welfare.