Audio problem: When Warren T. Rat calls open season on Fievel, the cats all scramble at once to capture him. In one shot where Fievel is running from either end of the piano, he jumps upon the same key twice. The notes play, but the key never goes down at all. (00:51:55)
Continuity mistake: When Gussie is demonstrating a secret weapon plan for the other mice, she points to a world map, pushing a small wooden boat from the end of a dock all the way to Hong Kong and leaves it there for the remainder of her speech. After she's finished Gussie dismisses the mice, but now the boat has returned itself to the original location on the map. (00:53:20)
Answer: Warren T. grabbed Tiger and told him he was fired.Tiger did eventually leave some time after that though.