The Land Before Time (1988)

Director: Don Bluth
Cast: Bill Erwin, Candace Hutson, Frank Welker, Gabriel Damon, Helen Shaver, Judith Barsi, Pat Hingle, Will Ryan

Synopsis:

An orphaned brontosaurus named Littlefoot sets off in search of the legendary Great Valley. A land of lush vegetation where the dinosaurs can thrive and live in peace. Along the way he meets four other young dinosaurs, each one a different species, and they encounter several obstacles as they learn to work together in order to survive.