If you think about it, a lot of childrens shows arent really suitable for kids, most of them from Disney.
Peter Pan- A man tries to kill a child
The Little Mermaid- A teenage rebells against her father and turns to witch craft, then gets married (at 16)
Dumbo- an elephant is mocked and ridiculed for being different
Resucers down Under- A child is kidnapped by a poacher who tries to shoot an endangered bird
Hercules- Involves striking deals with the Devil
Snow White- a 'wicked mother' tries to kill her 14 year old (step?) daughter, who later gets married...at 14
I could probably go into it more, but I think I got my point across.