ZAP’S FACTS!
PLANT-EATERS

The Stegosaurus had a brain about the size of a walnut.

Weighing more than a car, the Stegosaurus had a tiny brain the size of a walnut, but it didn't need smarts to munch on plants all day.

1 min read
A cheerful green Stegosaurus with bright orange plates has two walnuts balanced on its back, smiling against a sunny yellow…
THE FULL STORY

Despite weighing more than a car, the Stegosaurus had a tiny brain - roughly walnut-sized. It mostly ate plants and didn’t have to outwit much.

A vibrant red Maiasaura gently watches over its baby dinosaur hatching from an egg, surrounded by more eggs on a sunny…
DID YOU KNOW? Maiasaura took care of its babies - and that's why it's called "good mother lizard." A fossil nesting ground gave us our first proof that dinosaurs were parents. 2 min read
A cheerful green Plateosaurus with bright red spots and a yellow belly stands playfully against a blue polka-dotted…
DID YOU KNOW? Plateosaurus was one of the very first big dinosaurs. It lived 215 million years ago - long before T. rex existed. 2 min read
A cheerful green hadrosaur grins widely, showcasing its massive, layered teeth against a bright yellow background.
DID YOU KNOW? Some dinosaurs had over 1,000 teeth - all in one mouth. Hadrosaurs stacked their teeth in layers, replacing them constantly. 2 min read