"I'm Twitterpated!"

Sam's first voice work for Disney included voicing the adult thumper for Bambi. Note that there were three actors who played most of the voice parts for the film, representing the animals in child, adolescent and adult modes. A rabbit's voice must undergo change at some point, I suppose. So there were two other child actors who played Thumper. Considering that the script for Bambi had barely 30 pages of total dialogue, there wasn't all that much to read to begin with.

Thumper Image Copyright ©1942 Walt Disney Corporation.