This course is an introduction to the study of animal behavior. The unifying theme of this course is evolutionary, examining how behavior contributes to the survival and reproduction of organisms through evolution by means of natural and sexual selection. This course will focus on ultimate explanations of animal behavior with some attention or proximate mechanisms. The ultimate explanations typically concern “why animals behave the way they do,” whereas the proximate mechanisms examine “how animals behave the way they do.” The key topics covered in this course include natural selection and evolution, genes and the environment, animal learning, foraging behavior, predatory-prey interactions, evolution of sex, sexual selection, mating systems, animal communication, habitat selection and migration, social behaviors, and finally human behaviors. Students in this course are exposed to the process of scientific study through the field of animal behavior and to reading the primary literature of animal behavior.