Orodromeus (meaning "Mountain Runner") is a genus of herbivorous ornithopod dinosaur from the Late Cretaceous of North America. Orodromeus is a small fast bipedal herbivore that probably coexisted with dinosaurs such as Daspletosaurus and Einiosaurus. Its length is estimated by Horner & Weishampel at 2.5 metres. In this program, it is a common prey for Troodons.