Psittacosaurus, siht uh koh SAWR uhs, was a small plant-eating dinosaur that lived in desert regions of what is now Asia. Its name, which means parrot lizard, comes from its large, sharp, parrotlike beak. The dinosaur measured up to about 2 feet (60 centimeters) tall at the hips and 6 1/2 feet (2 meters) long.