If you were to blindly ask a kid about traumatizing moments that taught them a lot who weren't sheltered from movies entirely growing up, odds are they would say Bambi's mom getting shot ranks way up there for them. What is so bad about the moment is that it happens so early on in the movie that a young brain barely even has time to process it. Even as an adult that scene is truly tough to watch without welling up.
Get The Tissues! These Animated Movies Will Definitely Make You Cry