What? They are not Frozen, on a holiday or sth like that.
Don't tell me that you don't know the term "evolution". I'm gonna tell you a secret,we kinda have dinosaurs in the modern world. You can literally walk for 4 minutes and find a bird in a tree.
Technically all reptiles derived from dinosaurs. Unless I'm wrong.
While dinasours are reptiles, they come from a different evolutionary line then modern lizards. Birds are believed to be the living "descendants" of dinosaurs.
If you're pertaining to the giant dinosaurs that existed before, then I guess we'd all be dead OR they are secluded in specific areas so they couldn't harm us. We have arms though so we cannot go extinct.
They are not Frozen, on a holiday or sth like that. 
