Sweet baby Thor in a thunderstorm! The Dragons TV series begins with a new villain, new voices, new tricks, and new questions. What kind of tricks can you teach a dragon? How do humans and dragons live together now that the war is over? Does Snotlout have a heart? Is Toothless supersonic? What color is dragon poo? How do you start a dragon academy? Listen as we try to find the answers and I go on a very long tangent about speculative dragon evolutionary history; this is going to be awesome and scary!
Sources on the vapor cone effect are here, here, here, and here.
Tetrapod sources: Snake article on Wikipedia, Tetrapod page at UC-Berekely.
Smidvarg and the Gang 