Based on some ancient bones that have been recently dug up, we can pretty conclusively say that in pre-(H)istory there were gigantic lizard like creatures that could easily tower over 30 feet tall! The records indicate that these were either called "Dinosaurs" or "Dragons". If they were dragons then that means that they could breathe fire from their mouth, and there were likely some that could fly!
Imagine, riding around on the backs of these amazing beasts. We have fragments of a book about a "dinosaur utopia" that seems to show just such interactions, although some speculate that these are works of fiction. (I prefer to believe it though)
Although we have many dangerous and incredible monsters in our world, it is fascinating to think about the beings that are no longer with us...
... I wonder if someone could re-animate these bones?
-Writings by the Wizard Dietician Claudia Blacktower