I know, I know, it's not her latest series. I'm new to Robin. Please bear in mind that I haven't read past City of Dragons yet, so anything that happens after that, is a spoiler for me - sorry! Also, I will mention things from previous book so, anyway...
In Fool's Fate, Fitz tunnels through ice to Icefyre, where he finds someone has driven a wedge between his scales and had unsuccessfuly tried to hammer a spike through his skin to his heart. Ok, maybe Icefyre is good and frozen solid - but he sure thaws out pretty fast if that is the case!
In Ship of Destiny (I think), Wintrow is severely injured, and the dragon part of the liveship shows him how to heal himself.
So I wonder, why did the new dragons suffer so much from parasite on th way up the river? Perhaps they were weak and hungry. But then, how was someone able to stab Tintaglia through these supposedly strong scales? Even if it is a ery weak spot by her wing, why can she then not heal it at least to the point where it is not infected?
Don't know; it's just been on my mind a bit. I suppose I'm talking to myself