Trivia: Sylvester Stallone made a mere $23,000 for writing and starring in the film.
Suggested correction: Rocky actually was paid £35,000 for the film. When it comes to his salary for writing and acting for the $1 million budgeted movie, Stallone told Variety, "I got £35,000 for the first one. The screenplay was about £25,000, then £360 a week before taxes." But he also got points on the back end which made him another $2.5 million according to the same source.
Other mistake: About half way through the movie, Adrian gives Rocky a dog (Butkus). The second time Rocky goes to the meatpacking plant, the dog is with him when he walks in, but he walks out alone and the dog is not seen again in this movie.
Suggested correction: How is this a mistake? Rocky could easily have left with the dog on another occasion. It's like saying, sometimes Rocky is shown in a location but it's never shown how he got there. That isn't a mistake, it's just what happens in films. Also, the dog not being seen again is irrelevant.
Revealing mistake: When Rocky wakes up on the day of his first jog, the radio announcer reports that it's 28 degrees outside. However, when we see Rocky jogging, you can't see his breath. (01:07:45 - 01:09:00)
Suggested correction: As pointed out several times before, breath showing in the air is about humidity, not temperature. See Alien vs Predator for similar corrections.
This is a misunderstanding about how humidity plays a role in seeing your breath. If the relative humidity of both your breath and air outside combined is 100%, you'll see your breath, this means you can see your breath at higher temperatures. To reach 100% relative humidity, the outside humidity needs to be higher or the temperature needs to be lower. However, at a certain temperature (usually around 45°F), you'll always see your breath. So at 28°, you'll always see your breath, no matter what the humidity is. This is a valid revealing mistake.
Stupidity: There is no way a fighter with a brain would risk serious injury to themselves before a fight by continually punching a frozen rack of meat in a freezer slaughterhouse. There is nothing to gain by doing this, and it would only result in both fists being broken.
Suggested correction: In fact, Sylvester Stallone permanently damaged his knuckles filming the two scenes. He obviously did not realise how dangerous punching a side of beef would be, and it isn't out of the question that the character Rocky Balboa wouldn't realise this either.
It shouldn't take a rocket scientist to know that if you punch or hit anything with a bare fist against anything solid, rock hard, you will damage yourself badly.
Absolutely, it shouldn't, but that is not what the "Stupidity" category is for. It is unintelligent for someone to do this, but that is not a movie mistake. Sylvester Stallone really did punch that beef and really did injure himself, so it is not something that is out of the question for a character in a movie to do.
No, but it is out of the question for a man with painfully damaged knuckles to go fifteen rounds with a world heavyweight champion boxer. In fact, Rocky would probably have failed the compulsory pre-fight physical and would have been ruled unfit to fight.
Where in the movie is Rocky experiencing "painfully damaged knuckles"? With your logic, the fight would have most likely been called long before the 15th round, due to the very unrealistic and improbable punishment the 2 boxers were inflicting on each other.
Continuity mistake: In the scene where Mickey goes to Rocky's apartment to offer his services as manager, Mickey climbs the stairs and walks up to Rocky's door. The apartment number is on the outside of the door. The scene cuts to Rocky opening the door from inside the apartment. There is no longer an apartment number on the door. This happens before the bathroom door shot.
Suggested correction: This is not an error, the door that Rocky opens in that scene is the bathroom door inside of the apartment, not the front door to the apartment.
The continuity error mentioned above is true. This happens before the bathroom door scene. When Mickey knocks on his door there is a number 2 there. Then 5 seconds later when you see that same front door it has no number on it.