- Ensemble Dark Horse: Bob the Janitor.
- Fridge Horror: Invoked in nearly all the versions by the duck's fate, but the 2006 version is a special kind of horror if you know the wolf's backstory. She's a female trying to find food for her pups. The first solid food mama wolves feed their pups is the regurgitated, half-digested remains of their hunts. That poor duck...
- Nightmare Fuel: The Wolf, particularly in the Disney version.
- Uncanny Valley: There is one adaptation of Peter and the Wolf (the one narrated by Sting) where a number of characters in the first and third acts ("Peter and the Wolf" and "March in B Flat Major", respectively) are played by puppets. The animal puppets used for the bird, duck, wolf◊, etc. are odd-looking enough as it is, but the puppets used for the humans (such as Sting◊ (as the narrator) and the conductor◊) are... downright terrifying. But then, these were made by the same company who made the puppets for Spitting Image, so its not suprising.
YMMV / Peter and the Wolf