Dragons seem to be one of pop cultures fantasy mainstays: How to Train Your Dragon was so popular it got a sequel and is getting another, Peter Jackson’t Hobbit movies brought a motion-capture Smaug to the big-screen, and this year’s heartwarming Pete’s Dragon made our list of the best summer movies of 2016. With a lull in dragon content before HTTYD 3 arrives, Fox Animation announced today that it has acquired the film rights to what is arguably the saddest song in the whole world: Peter, Paul & Mary’s “Puff the Magic Dragon.”