Dragon's Flame, Magical?

[Legate of Amon Lanc]

Originally Posted by Dwarven Warrior

But no other dragon other than Smaug has ever done this. I'm scurrying through my LotR books here, and I can't find anywhere else that it says that.

But it is probable the others did too, even though it isn't mentioned. Generalising is often dangerous, but at this time I believe we can take it granted for all dragons. In Roverandom, if I recall correctly, the Dragon of the Moon also did breathe green flames, even though it isn't a M-E story, it shows that Tolkien was quite fond of green fire so we could expect it from other dragons in his works as well. (Personally, I think it is some sort of expression from Tolkien to give "fairytale" quality to a "normal" fire - I wouldn't put it past him - and in that case, our question is solved: of course it was a "magic" fire.)