A small fraction of the global terrestrial molluscan diversity exhibit high propensities for passive dispersal associated with human trading activities and invasiveness when introduced to new areas. They have become increasingly important as crop pests in agriculture and as vectors of helinth parasites in humans and domestic livestock. This book is aimed at both students and professionals concerned with conservation of molluscan communities in natural habitats and control of pesiferous species. It draws together the available information on the diversity of organisms that constitute the natural enemies of terrestrial molluscs. In a series of review chapters, it provides an authoritative synthesis of current knowledge and research on predators, parasites and pathogens.