Nocturnal and ever-moving, documenting these tiny swift foxes took three years for photographer Michael Forsberg. https://on.natgeo.com/2LTLQO4 | National Geographic History

This video of a swift fox den was captured this spring by South Gillette Game Warden Levi Wood. The swift fox is one of three fox species found in Wyoming, including the red fox and the gray fox found in the Black Hills. It is Wyoming's (and North America's) smallest canine, weighing in at just five to six pounds. Throughout the majority of their range, swift fox are tied to arid grassland and mixed shrub-grassland habitats. In Wyoming, this species is most common in the Great Plains habitats of