Visible crew/equipment: When Baby tries to walk, and he falls over, as he falls you can see the black sleeve covering the puppeteer's arm.
Dinosaurs (1991)
1 visible crew/equipment mistake in When Food Goes Bad - chronological order
Starring: Jessica Walter, Stuart Pankin, Leif Tilden, Jason Willinger
Other mistake: As Early and Roy watch the time clock waiting for the lunch whistle, the clock reads 11:56 a.m. It then jumps to 12 noon, bypassing four minutes.
Baby: I'm a big boy.