Disney animator Don Bluth, along with 16 other animators, leave Disney, disheartened at its move away from traditional animation, and set up his own studio, Don Bluth Productions.
Not only was Bluth responsible for harder, edgier animated movies, such as
The Secret Of NIMH, An American Tail, The Land Before Time
All Dogs Go To Heaven
, but his output provided stiff competition for Disney during the late 80s and early 90s.