Control of stray and feral domestic dog populations is a problem in many parts of the world. These animals can be a threat to human health and a threat to wild animals, and their own welfare is often a matter of concern. The World Society for the Protection of Animals’ (WSPA's) new booklet on stray dog control provides a compendium of information on various aspects of the subject. It is intended, so the introduction informs us, as a supplement to the Guidelines for Dog Population Management published jointly in 1990 by the World Health Organisation and WSPA.