This work describes diagnostic procedures and treatment techniques commonly used in the routine management of brood mares, with the reasons for their application. Attention is drawn to those areas where knowledge is scant and where popular belief appears to be misinformed. An attempt has been made to set out what is practical, given that the cost of veterinary help can be prohibitive for some mare owners and inconsequential for others. The book has been written primarily for veterinary undergraduates and veterinary surgeons in practice. Additionaly, both mare and stallion owners may find the answers to some of the vexing problems they encounter when breeding their horses. Since the first edition was published in 1988, a number of important advances have been made including the use of ultrasound in diagnosis and the book has been fully updated and expanded to take account of the new developments.