Although Tyrannosaurus had a huge body, its brain was much smaller than yours. Like all dinosaurs, its brain was protected by a tough, bony case. The dinosaur brain was good enough to tell them where to find food and how to escape danger, but they were unable to learn as well as birds and mammals. Only the small meat-eaters, such as the raptors, has as much brain power as birds.
Reptiles have a tiny brain contained inside a small bony box at the back of the skull.
It simply sent nerve messages to the eyes, ears, mouth, and muscles to make the body work. Twist two long pieces of wire together to make the backbone, tail and a head with an open mouth. Then twist two smaller pieces of wire together for the arms and legs. Attach these by twisting them around the backbone. Now add more pieces of wire to fill in the body, as shown to the left.