They Went to Great Lengths
The pair went to great lengths to make sure the animals felt at home, and a vivid image of the Tanzanian Serengeti was portrayed. They even created a lake near the house by damming a creek. Terrence Minogue, the composer for the film actually got his piano moved to the house. He sat down alongside the lions to compose a score with their growls in the background.
Marshall was the main scriptwriter. After he had come up with the first draft, he persuaded Japanese and British investors to provide the funds for the movie. The most significant expense was food, as all the animals needed around 10 to 25 pounds of fresh meat every day.