Osteoarthrosis in a wolf (Canis lupus) radio-tracked in Minnesota.

Osteoarthrotic changes are described in the skeleton of an old wolf (Canis lupus) from Minnesota. Osteophyte formation appeared sufficient to restrict severely the range of motion of the joints. Despite this impairment the wolf ranged over 100 km2 and killed a minimum of one or two adult white-tailed deer (Odocoileus virginianus) during a 6-week period between capture and death.