A dinamation robotic model of an Apatosaurus (with the skin removed showing the metal skeleton) at the Dallas Science museum. A time exposure shows how the neck and head respond to joystick commands. Dinamation International, a California-based company, makes a collection of robotic dinosaurs. The dinosaurs are sent out in traveling displays to museums around the world. The dinosaur's robotic metal skeleton is covered by rigid fiberglass plates, over which is laid a flexible skin of urethane foam. The creature's joints are operated by compressed air and the movements controlled by computer.