The first book to offer practical guidelines on the prudent and rational use of antimicrobials in animals. Drawing on multidisciplinary expertise to offer independent scientific advice on a controversial area that is crucial to both human health and animal welfare. The earlier general chapters cover issues such as human health risks and the problems of resistance to antimicrobial drugs. The later specific chapters are dedicated to particular groups of animals. * Has an emphasis on preserving the efficacy of antimicrobial drugs that are clinically important in human medicine * Covers both companion animals and food animals, including aquaculture * Suitable for veterinary practitioners working in small and large animal medicine, aquaculture and animal production, as well as veterinary students, academics and researchers. It will also be of interest to those more generally involved in veterinary public health and antimicrobial resistance.