Miyanishi Tatsuya Gekijou: Omae Umasou da na

A Tyrannosaurus called Heart was raised by a herbivorous dinosaur. As he grew up, he was scared by other dinosaurs. One day, Heart meets a baby Ankylosaurus and he names the baby "Umasou (looks delicious)". Umasou started to be attached to Heart and a strange family love develops between the two.