how do dragons fly? (Spoilers all books to end DH)

[Farseer]

Who says the acid is just there becuase its more natural. I can easily see a scenario where an animal has sacs with gasses that, when coming in contact with each other, burst into flame. These would be sprayed into the air and light up. Turning the creature into a fire breather.

Hobb doesn't seem to be emphasizing fire-breathing ability into her dragons, though there is the possibility that the acid is flammable.

I just came across this as I've finally managed to get back to my RA re-read...it's in Chapter Ten, 'Fool's Errand' (I love that simple chapter headings later become book titles! ), where Fool is prompting Fitz to think about where all the Skilled ones have gone, and how he may find out more about the Elderlings:

"So answer this. What has wings in Shrewd's scroll, a tongue of flame in Verity's book, silver eyes in the Relltown Vellums, and gold-scaled skin in your room?"

While the answer to this riddle of Fool's is "an Elderling", the question that remains is if he is here thinking of an Elderling or a dragon which he and Fitz had viewed as an Elderling until they discovered that the stone dragons were imbued with the anmas of Elderlings and dragons were actually...dragons. An example of this is when Fitz saw the dragon landing in the waters of Kelsingra when he was there in AQ and he breathed, "Elderling"..yet we now know it was actually a dragon that he'd seen and NOT an Elderling. Still, at the time, he'd thought it was an Elderling...

Back to the question...is Fool here speaking of an Elderling such as Selden, speaking minstrel-like wisdom and truth or a dragon with its literal "tongue of flame"? Is this evidence to support the presence of flame-breathing dragons, and not just acid spitting etc, within the RotE?

The answer to the question regarding an Elderling vs a dragon will also provide insight into Nuytsia's question regarding King Wisdom needing the Wit or not to awaken the Elderlings...was the being beside King Wisdom depicted in Fitz' bedroom wall tapestry an Elderling borne from a human, a true-born dragon or a stone dragon imbued with the anma of an Elderling/Skilled one? Only the latter would require the Wit to awaken it so which of the three was it? Whatever it was, it shares a tongue of flame with the same being in Verity's book.