UW Stout officials said a dog was chasing a deer, when the deer ran through a window into a campus building.
It happened late yesterday afternoon at the Vocational Rehabilitation Building on the Menomonie campus.
Officials said the animal left a trail of blood on the floor, and left building from a set of automatic doors.
Investigators tracked the blood trail through the campus, but the trail ended at some point, and the deer could not be found. Damage is estimated to top $5500.