Heart and Yummie(2010)

おまえうまそうだな

Heart is a tyrannosaurus who is found and raised bv a herbivore mother. After learning his true nature as a meat eater, he runs away from home and finds a baby ankylosaurus egg that hatches and thinks Heart is his father. After accidentally naming the baby Yummie - thinking he looked tasty - their love for one another tests the bounds of nature vs. nurture.