Factual error: When Gussie Mausheimer is pointing to a map and outlining the secret weapon plan, east and west are switched on the compass rose. (00:52:55)
Factual error: When Fievel is being dressed by the pigeon there are two American flags in the background. The flags have too many stars for the mid 1880s, when the movie is set.
Answer: Warren T. grabbed Tiger and told him he was fired.Tiger did eventually leave some time after that though.