This class will review the social systems and behavior of our closest living relatives, the primates. The course will be divided into two parts. Part 1 will introduce the biology and behavior of lemurs, lorises, tarsiers, monkeys, and apes. It will cover important aspects of their life histories, their social systems, and their reproduction, such as dominance and aggression, mating and parenting, predation, feeding strategies, and social relationships. Part 2 will focus on primate cognition, including their communication and problem-solving abilities and their analogs of culture. The class will draw heavily on field studies of primates, and emphasize their behavior in natural environmental and social settings.