What is it that a dinosaur eats?

Animals and plantsare what a dinosaur eats.

Specifically, dinosaurs can be categorized as carnivores, herbivores or omnivores. Carnivorous dinosaurs followed a fish or meat diet which in rare cases included cannibalizing their own kind. Herbivorous dinosaurs pursued a plant diet which sometimes included accidental ingestion of vegetation-residing/visiting animals such as insects. Omnivorous dinosaurs pursued diets which involved preying upon animals and plants.