Mine Your Own Business - S1-E4
Character mistake: When Shaggy and Scooby order Sarsaparilla at the saloon, Scooby says "Two" but he appears to be holding up three fingers.
Scooby-Doo, Where Are You! (1969)
1 character mistake in season 1
Starring: Frank Welker, Don Messick, Casey Kasem, Nicole Jaffe
Continuity mistake: Scooby finds a clump of ape hair stuck in the wine cask. It cuts to the gang, then back to the cask as they walk up and suddenly the clump of hair is twice as thick. (00:16:45)
Don't Fool With a Phantom - S2-E8
Shaggy: Hey, Scoob, aren't our wax statues the greatest?
Scooby: Yeah.
Daphne: Just what are you fellas going to do with those wax dummies you made?
Shaggy: Well like simple, next time we have a mystery, those dummies can go instead of us.
Fred: There's only one problem. How to tell one pair of dummies from the other.
Shaggy: Very funny, very funny.
Scooby: Yeah. Rery funny.
Trivia: During the chase scene, there is an advert on the wall which says "H&B Tuna Co." - a reference to Hanna-Barbera.
Scooby's Night With a Frozen Fright - S2-E4
Question: Is Daphne holding her breath when the gang is in the tank underwater?