Gina recommends How Do Dinosaurs Eat Their Food? by Jane Yolen

My grandson aged 4 really loves the "How Do Dinosaurs" series, as I think he can relate to all the little upsets when learning "proper manners" as well as learning appropriate emotional responses when he is mad or doesn't like his meal. He asks to re-read the books often. A sure winner for your dinosaur loving child.
Publisher's description:
Describes how a dinosaur eats, with no rude noises and while sitting very still.