The Land Before Time III: The Time of the Great Giving

The Land Before Time III The Time of the Great Giving is a 1995 directtovideo animated adventure musical film directed by Roy Allen Smith. It is the second sequel to the The Land Before Time and the third film in the film franchise.

When the interspecies situation becomes worse and worse, Littlefoot and the others set out to find water, whereby to keep the peace in the Great Valley. They are pursued by Hyp, a small FastRunner Nod, a Clubtail and Mutt, an oddlooking Bigmouth, three teenage dinosaurs who constantly bully and brownbeat Littlefoot and his friends. When Littlefoot and the others find a small lake, the teenagers emerge and claim the waterhole for themselves, demanding that Littlefoot and the others keep silent about their discovery. Unwilling to comply, Littlefoot and the others flee from the bullies and during the following pursuit, the bullies are then chased away by a wasp after Mutt accidentally called it a dummy, and the kids discover the reason for the blockage of the Great Valleys water source.Before they can return and tell the other Valley inhabitants the truth, lightning strikes on a tree and ignites a wildfire that spreads rapidly through the dried Valley. The dinosaurs barely make it to safety at the edge of the Mysterious Beyond while the fire ravages their home. When the protagonists tell the other dinosaurs of their discovery of the waters blockage, disunity about what to do prevents the adult dinosaurs from doing anything to utilize this knowledge. Hyp, Nod, and Mutt set out into the Mysterious Beyond on their own to get to the water first. ........

Source: Wikipedia