Dinosaur Train - Season 1 Episode 6 -

From PBS KIDS - Fast Friends: Buddy, Tiny, and Mom ride the Dinosaur Train to meet Oren and Ollie Ornithomimus, some of the fastest dinosaurs ever! The kids love meeting the fast-moving and fast-talking twins. T-Rex Teeth: When Buddy loses a tooth, Mom takes him to Rexville to ask his Tyrannosaurus friends all about T-Rex teeth. They explain that he'll grow new teeth to replace the old ones.