Wolverines (Gulo gulo), mid-sized carnivores in the weasel family that typically occupy high-elevation alpine and forest habitats, exist in low densities in the park and are rarely detected. Park biologists have used remote cameras to monitor the cougar population since 2014, but this technology has since become increasingly valuable for detecting and monitoring a variety of species and aspects of Yellowstone’s ecology. This is the first video footage of a wolverine since remote cameras have been deployed in the park.