An evil shape-shifting witch in Navajo folklore. Skinwalkers roam the night dressed in animal skins looking for victims, and have the power to turn into the animal whose skin they are wearing. They can control people's minds, run faster than a car, jump from mesa to mesa, and cause people to sicken and die by hiding "witchcraft bundles" near their homes or even placing cursed objects within their bodies.

Too Good to be True, a collection of urban legends by Jan Harold Brunvand, contains a transcript of several Navajo boys recounting a common urban myth ("The Boyfriend's Death") which they of course believe to be absolutely true. In their version, a skinwalker is the perpetrator rather than the standard homicidal maniac.