Continuity mistake: When Boris Amphibiensky fails his high jump attempt during track and field, one of the bar's ends sticks to the post while the other reaches down to the ground. But the bar's length is only about an eighth of the posts' height, which is more than 77 feet, so the one end shouldn't reach the ground while the other still hangs on to the post's top.
Continuity mistake: When the boxer Janos Brushteckel sits in his dressing room after his crushing defeat, look at his right horn. In the opening scene it is broken; when Lodge Turkell urges him to watch the replay, it is whole; and later on it is broken again.