Many biological organisms have evolved to exhibit diverse behaviors, and understanding these behaviors is a fundamental goal of multiple disciplines including neuroscience, biology, animal husbandry, ecology, and animal conservation. These analyses require objective, repeatable, and scalable measurements of animal behaviors that are not possible with existing methodologies that leverage manual encoding from animal experts and specialists. Recently, computer vision has been making a significant impact across multiple disciplines by providing new tools for the detection, tracking, and analysis of animal behavior. This workshop brings together experts across fields to stimulate this new field of computer-vision-based animal behavioral understanding.