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.
Rocky (1976)
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Directed by: John G. Avildsen
Starring: Sylvester Stallone, Burt Young, Burgess Meredith, Carl Weathers, Talia Shire
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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.
Trivia: During the scene before the fight, where Rocky enters the ring and sees the 2 portraits of him and Apollo, the error on Rocky's shorts was an actual error made by the art crew, and Sylvester Stallone rewrote the scene when he saw this mistake.
Question: When they promote the fight, why do they say January 1st is America's birthday?
Answer: They mean the entire year, 1976, is America's birth "day," being the bicentennial of the Declaration of Independence. So the fight, taking place on January 1, is the "first sporting event on our two hundredth birthday."