Oddly enough, I can think of ALOT of sad Disney Moments... I shall list them now.
1. Dumbo: When his mom is in jail and is rocking him to sleep through the bars.
2. Fox and the Hound: When Copper and Todd decide they cant be friends.
3. Bambi: Mom dies. Enough said.
4. Toy Story: When Jessies previous owner stopped loving her. Sad.
5. Lion King. Mufasa DIES!!! :'(
Cant think of anymore... too... depressing.