Donald Duck and the Gorilla
Donald Duck and the Gorilla is a Donald Duck short adventure disaster and monster film which was originally released in 1944. It stars Donald Duck along with his three nephews; Huey, Dewey and Louie and Ajax, the killer gorilla. The 1930 Mickey Mouse cartoon "The Gorilla Mystery" has a similar plot involving a gorilla named Beppo who captures Minnie Mouse.
Huey, Dewey, and Louie
One story in Donald Duck comics was based around Donald spending so much time trying to tell his three nephews apart that he developed a heightened sense of sight.