Originally, the concept consisted of an all-animal world, like Disney's Robin Hood, but Bluth suggested featuring an animal world existing as a hidden society from the human world, like Disney's The Rescuers. After viewing The Rescuers, Spielberg agreed. Emmy-award-winning writers Judy Freudberg and Tony Geiss were brought in to expand the script. When the initial script was complete, it was extremely long and was heavily edited before its final release. Bluth felt uncomfortable with the main character's name, thinking "Fievel" was too foreign-sounding, and he felt audiences wouldn't remember it. Spielberg disagreed. The character was named after his maternal grandfather, Philip Posner, whose Yiddish name was Fievel. (The scene in which he presses up against a window to look into a classroom filled with American "school mice" is based on a story Spielberg remembered about his grandfather, who told him that Jews were only able to listen to lessons through open windows while sitting outside in the snow). Spielberg eventually won out, though something of a compromise was reached by having Tony refer to Fievel as "Filly. " Spielberg also had some material cut that he felt was too intense for children, including a scene Bluth was developing revolving around wave monsters while the family was at sea.