Factual error: When Snowflake is being stolen at the beginning, he makes the high-pitched noise that dolphins make even when he is out of the tank; those high peals are made underwater through carrying sound. He wouldn't sound the same out of the water as he did under it.
Factual error: The movie that Ace plays back when he goes to Finkel's house mentions that it is Superbowl 17. Only problem was the entire film references to Super bowl 19 between the Dolphins vs 49ers. Superbowl 17 was Dolphins vs Washington. Added to this the Dolphins lost by much more than just a field goal in both games.
Chosen answer: That scene was cut originally by the director Tom Shadyack because the scene did not support the story and thought it slowed the film down. (And the scene was cut from the US version as well.) It was added back later in TV versions of the film. Fan enjoyed the scene so much they asked it be put back in the film version. I know the DVD has it because I own it. It's hilarious!