Goof: The giraffe makes a birdlike noise even though technically it shouldn't make any. The zebra whinnies like a horse, and the elephant doesn't really sound like a real one either, and even jumps on a safe to bust it open. In real life, elephants cannot jump.
Goof: When the gang is locked in the Ringmaster's cage, one shot has Speed Buggy's mouth missing. In a later shot, Debbie's shoes are white instead of blue.
Debbie: Well, while he's training his army, let us go A.W.O.L. (struggles to bend the cage bars open) Oh! Don't just sit there, give me a hand! (Mark and Tinker applaud) Not that corny routine! Oh, boys!
Tinker: Oh, oh! Debbie's gettin' mad. Wake up, Speedy! We've got work to do.
Speedy: Huh? Huh?
Debbie: And make it snappy! And that's an order!
Tinker: Yes, sir...I mean yes, ma'am, Commander.