Throw It In: Didi Conn had laryngitis when she voiced Ann. Richard Williams asked it be left it because it worked for the more emotional scenes.
Improvisation was encouraged amongst the actors, most notably the camel's line "Look at mah poor knees!"
Troubled Production: Richard Williams, in full-blown Prima Donna Director-mode, demanded that the project have two simultaneous animation units going on either US coast to get the high-quality animation he wanted, which skyrocketed the budget. His persistent editing and demands for retakes eventually convinced the studio to change the locks on the door to the editing bay just so they could get the film released. There are rumors that Joe Raposo was't much better, and demanded that no less than ten of his song remain in the film.
The infamous "Greedy" sequence looks insanely complex, doesn't it? Did you know that every cleanup drawing took an entire day to do, and that it had to be done three times to get it just right??