Doraemon: Nobita's Dinosaur

Nobita stumbles upon a fossilized dinosaur egg and, using Doraemon's gadgets, manages to hatch and raise the dinosaur. Realizing they can't keep it indefinitely, Nobita reluctantly sends the dinosaur back to prehistoric times-only to discover that hunters from the future are threatening the dinosaurs' survival. Determined to protect them, Doraemon and his friends travel to the past and embark on a prehistoric adventure to stop the hunters.