Furthermore, in order to have the film finished on time, Schumacher enlisted the support of the Disney-MGM Studios, which was originally envisioned to produce independent cartoon shorts and featurettes. On its first assignment on a Disney animated feature film, seventy artists contributed ten minutes of screentime, including supervising animator Mark Henn. Serving as one of ten supervising animators, Henn animated several scenes of Bernard, Miss Bianca, and Percival C. McLeach. For the mice characters, Henn studied the mannerisms made by Bob Newhart and Eva Gabor during voice recording sessions, and looked to George C. Scott's performance in "Dr. Strangelove" for inspiration while animating McLeach. To create believable realism for the Australian animals, additional animators traveled to the San Diego Zoo to observe kangaroos, kookaburras, and snakes, while an iguana was brought in by the staff at Walt Disney World's Discovery Island for the animators drawing Joanna.