I think it's just a pretty design, not something that's meant to be read into too much. But that's just me. Heck, it could be nothing more than an easter egg of some kind.
I've noticed that whenever someone comes up with a cool theory everyone doubts it, and says " its a cool thought, but I doubt its legit." C'mon ppl! Why are you even on this site if not to theorize? Stop being so negative! Nintendo likes to recycle things, especially bosses, I for one think that this theory holds weight, why else would it be a dragon that looks identical to volvagia?
Please explain to me how that looks identical to Volvagia. I don't see it. Plus, it could be ANY dragon out there. It's a fire temple (or something) key, they need a fire animal. And what's the only one of those anywhere? Dragons.why else would it be a dragon that looks identical to volvagia?