In this context, dog skin refers to a Navajo Wolf, a witch that dresses in the skin of a wolf. The Navajo Wolf can also read others' minds, control minds, bring forth disease, destroy homes, and even cause death.
"Wolf skin, August 6, 2013" by Ian Stannard is licensed under CC BY-SA.
A01 The Blessing Way (01-07) p. 23 A01 The Blessing Way (01-07) p. 111
Frisbie, Charlotte J. 1987 Navajo Medicine Bundles or Jish: Acquisition, Transmission, and Disposition in the Past and Present. Albuquerque: University of New Mexico Press.
Kulckhohn, Clyde and Dorothea Leighton 1946 The Navaho. Cambridge: Harvard University Press.
Shepardson, Mary and Blodwen Hammond 1970 Navajo Mountain Community: Social Organization and Kinship Terminology. Berkeley: University of California Press.
Tony Hillerman Portal