This volume details the different ways that nocturnal primates avoid predators. Anti-predator strategies exhibited by nocturnal prosimians include: crypsis, alarm calling, mobbing behavior, and production of toxins, group cohesion, and behavioral modification during moonlight, and vigilance, among others. Additionally, Primates and their Predators incorporates several chapters on the theoretical advances that researchers studying nocturnal primates need to make (that is, where the field needs to go given the state of predation theory). Chapters on predation theory of non-nocturnal primates are included for comparison purposes.