Trivia: The "Cinderella story" sequence was all improvised by Bill Murray.
Trivia: Originally, the Animalympics movie consisted of two separate parts, the summer and winter games; the theatrical release features both games in one setting. A special video release features both games separately.
Trivia: During the final match with Sugar Ray, a veteran ringside observer seated in the front row counted between fifty to sixty punches that Sugar Ray delivered to Jake LaMotta. Even after Jake was defeated, it was not all bitter: After the fight, the fans sang 'For he's a jolly good fellow' for him.