User blog comment:Lightning the Skrill/Snow Wraith Frost?/@comment-25863920-20150710114042/@comment-24990845-20150712105740

That's why dragons would use larger wings. And smaller wings beat faster, like a hummingbird. Anyways, for dragons to breathe fire and takeoff requires heavy energy. Which means it probably needs to conserve energy from its legs and tail strength, depends on what type of dragon (sea, air or land based). But it also needs to conserve energy from food or carbon for flame. Or even acid based dragons like Changewings can conserve more energy than fire breathers. So it might need to conserve energy for excretion as well. So it might have different digestive chemicals. But all that is possible. Flight wouldn't be a big problem.

And yes it is a fictional fantasy world but thinking reality is intresting, but can also be really annoying.