Best family movie trivia of 1959

Trivia: If you look closely, there are many "Mickeys" in the scenery. For example, look in the bushes in various scenes and you will see three circles that form Mickey's head.

Trivia: The dimitrodon, the dinosaur in the middle of the movie, is actually a real lizard (a basilisk, in fact) with a sail glued onto its back.

Trivia: In the cartoon's opening title credits, there is no "Layout" next to Robert Gribbroek's name, which makes him appear to be an animator.

Trivia: Although Mel Blanc is credited for voice characterizations, there is no dialogue in the short; the only vocal effect you hear is when an audience member is coughing.