Trivia: To make the effects of Audrey II look convincing, the animatronic was usually shot at a lower frame-rate, such as 12 frames per second, and then played back at the standard 24fps. This sped-up the shots and made the animatronic's motions look more fluid and lifelike. In order to compensate, whenever a human actor would be in-shot with Audrey II, they would have to act in "slow motion" in order for their movement to look right at 24fps. (You can kinda tell in a few shots if you look closely).
Trivia: Fievel was named after Steven Spielberg's grandfather.