1 Faculty of Veterinary Medicine, University of Calgary, 3280 Hospital Dr. NW, Calgary, Alberta T2N 4Z6, Canada.
2 Faculty of Veterinary Medicine, Department of Veterinary and Clinical Diagnostic Services, University of Calgary, 3280 Hospital Dr. NW, Calgary, Alberta T2N 4Z6, Canada.
3 Canadian Wildlife Health Cooperative, University of Calgary, 3280 Hospital Dr. NW, Calgary, Alberta T2N 4Z6, Canada.
4 Bow District, Environment and Parks, Research and Stewardship Division, 1 Street W, Cochrane, Alberta T4C 1B4, Canada.
5 Faculty of Veterinary Medicine, Department of Ecosystem and Public Health, University of Calgary, 3280 Hospital Dr. NW, Calgary, Alberta T2N 4Z6, Canada.
6 Parks Canada, Banff National Park, Box 900 Banff, Alberta T1L 1K2, Canada.
An adult female Rocky Mountain bighorn sheep (Ovis canadensis canadensis) was euthanized because of a large mandibular mass. Histopathology revealed an ameloblastic fibro-odontoma, a rare odontogenic neoplasia.