Audio problem: When Grumpy hits his head on the bridge we hear the sound of metal, but the bridge is made of wood. (01:08:00)
Continuity mistake: When Snow White is lying in the glass coffin, the Dwarfs remove the glass top and kneel around her, but in the next wide shot Grumpy and Sneezy have switched positions with each other.
Doc: The, uh, Princess will sleep in our beds upstairs.
Snow White: But, where will you sleep?
Doc: Oh, we'll be quite comfortable down here, in, uh, in, uh.
Grumpy: In a pig's eye.
Doc: In a pig's eye - sty - NO! No! I mean, we'll be comfortable, won't we, men?
Trivia: When making this movie, Walt Disney turned the script into a comic at first and they used these "comic strips" to move around shots and scenes, replace things and generally see what would work or not. This technique is now known as storyboarding and pretty much every single movie production uses it.
Question: Why does the queen, when she's an old hag, walk all the way to the dwarves' cottage? Why doesn't she have her servants transport her there?
Answer: Probably because she is doing everything in secret. Servants have a tendency to talk to others.
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