Iguanodon were large herbivorous dinosaurs that lived in the Cretaceous Period. They were about 33 feet (10 meters) long. A herd of Iguanodons can be seen in Dino World during Ice Age: Dawn of the Dinosaurs. When a group of angry reptiles confront the herd, you can see some Iguanodons. They appear in the game too, but they only serve as scenery object. However, a lonely Iguanodon is an enemy in the level Noisy Nightlife.