Dinger, the Rockies Mascot, is based off of a triceratops – an herbivore dinosaur species that certainly lived in the area, as evidenced by the several triceratops fossils found in the region. So, if you have wondered why Dinger is a Dinosaur and if the rumor is true that the mascot is really based on the fossils found at the Rockies' home at Coors Field? The answer is yes.