Donald's nephews disguise themselves as a mountain lion to scare Donald, when a real mountain lion comes wandering along.
- Donald Duck (voiced by Clarence Nash)
- Huey, Dewey, and Louie (voiced by Clarence Nash)
- Louie the Mountain Lion (voiced by Clarence Nash)
- Donald's Quack Attack, episode #53
- The Unsinkable Donald Duck with Huey, Dewey, and Louie
- Walt Disney Treasures: The Chronological Donald, Volume 3