🥩 Dinosaur Diets

What Did Dinosaurs Eat?

Dinosaurs were not all ferocious meat-eaters — their diets were as diverse as modern animals. Herbivores like Triceratops and Brachiosaurus ate plants, carnivores like Tyrannosaurus rex and Velociraptor hunted other animals, and omnivores like Oviraptor ate both. Studying dinosaur diets teaches students how scientists use fossil evidence — tooth shape, jaw structure, stomach contents, and even fossilized dung — to reconstruct the eating habits of animals that lived millions of years ago.

This interactive tool lets students explore different dinosaur species and discover their diets based on the evidence paleontologists have gathered. By examining teeth (flat for grinding plants vs. sharp for tearing meat) and body structure (long necks for reaching treetops vs. powerful legs for chasing prey), students practice the same deductive reasoning scientists use.

Teeth Tell the Story

A dinosaur's teeth are the strongest clue to its diet. Hadrosaurs had hundreds of tightly packed teeth for grinding tough vegetation. Tyrannosaurus rex had massive, serrated teeth designed for crushing bone. Some dinosaurs, like Gallimimus, had no teeth at all and likely ate insects, eggs, and small animals. Comparing tooth shapes across species helps students understand how form follows function — a key concept in biology.

Connect dinosaur diets to modern food chains: herbivore dinosaurs were primary consumers, carnivores were secondary or tertiary consumers, and plants were the producers that supported everything. This ecological framework shows that the same energy-flow principles that governed Mesozoic ecosystems still operate in every ecosystem today.

Last reviewed: May 2026 · Aligned with NGSS 3-LS4-3, MS-LS2-3