Iguanodon

Iguanodon was a big herbivorous hadrosaur. Not all creatures from the Mesozoic were dinosaurs, but the Iguanodon was a dinosaur. Iguanodon could walk on all fours or on two legs. It had a thumb spike on its front legs. One of Iguanodon’s predators was the sickle-clawed Utahraptor. Iguanodon had a long tail to keep balance while on two legs.