Yep! -- I liked the idea of bringing attention to what it was gradually, so that you could get into identifying with the dragom's point of view.
Still, a dragon has to have something more than meat to be able to sustain fire, (and flight!) I've built up a scenario where dragons make sense biologically, and aerodynamically, but they will also have to have a sensible energy signature and process.
My dragons will be primarily herbivores, but with their awesome defensive and offensive capabilities, surely no one will object to their having the occasional protein snack.