The Platypus Trophy is a trophy awarded to the winner of the annual Civil War college football game between the University of Oregon and Oregon State University. The trophy depicts a platypus, an animal which has features of both a duck (Oregon's mascot) and a beaver (Oregon State's mascot). For three years, from 1959 to 1961, the trophy was awarded to the winning school. The trophy was lost for more than 40 years before being rediscovered in 2005 and proposed as the game's unofficial trophy in 2007. It is currently awarded to the alumni association of the winning school.