Disney's Bambi

You may know Bambi from the 1942 animated film, but this Disney feature was actually based on a book released nearly two decades earlier. Disney adapted most of the plot and the titular protagonist from Austrian author Felix Salten’s 1923 novel Bambi, A Life In The Woods. Originally, the novel portrayed Bambi as a roe deer, a species native to Eurasia. Since Americans would be unlikely to recognize this species, Disney changed Bambi into a whitetail deer. It only makes sense since whitetail deer are the most widely distributed deer species in the world. Thus, Disney settled on using this species for the films.

Source of Knowledge: https://facts.net/whitetail-deer-facts/