Name some other dark animated movies besides this.
For me:
The Black Cauldron.
Filmation's Pinocchio and the Emperor of the Night. (It stars James Earl Jones and it's quite dark beyond belief that it has to be seen on youtube even for part 5 of the movie on there which is a disturbing scene)
The Secret of NIMH.
Watership Down.
The Brave Little Toaster.
Fire and Ice.
Wizards.
"You gotta be Fking kidding"-The Thing.