Original: For the movie , Disney took the liberty of changing Bambi 's species into a white-tailed deer from his original species of roe deer , since roe deer do n't inhabit the United States , and the white-tailed deer is more familiar to Americans .
Simplified: For the movie , Disney changed Bambi 's species into a white-tailed deer from his original species of Roe Deer , since roe deer do n't live in the United States , and the white-tailed deer is more familiar to Americans .