First published in 1983, this book has become a definitive reference book on sheep diseases. The third edition has been fully revised and updated to take a more international approach to the many diseases which affect sheep. The original structure of the book remains the same but new sections have been added on reproductive physiology and on regional problems which consider diseases of importance in the Middle East, Southern Africa, Australia, New Zealand, North America and South America. There are also new chapters on sheep as a worldwide resource and sheep welfare including standards and practices, castration and tail docking, and the transport of sheep. Any veterinary surgeon or agriculturalist who works with sheep will continue to find the information in this book the most authoritative and comprehensive available.