We give an overview of methods used to track moving objects in video and describe how information about animal behavior can be extracted from tracking data. We discuss how computer-aided observation can be used to identify and pre-select potentially interesting video sequences from large amounts of video data for further observation, as well as directly analyze extracted data. We examine how this analysis can be used to study animal behavior. As an example, we examine thermal video recorded from free-living, nocturnal, wild mice in the genus Peromyscus.
