Yeah, but if you accept the theory of evolution, no way can a dragon have four limbs plus wings. The critters that crawled forth from the water had four limbs and five fingers on each limb, and all us vertebrates have followed that basic plan ever since. Some animals have fewer than five digits, like horses, but you see their ancestry in the fossil record, in utero, and sometimes in birth defects. Flying vertebrates - bats, birds, pterodactyls - gave up their forelimbs - arms and hands - in exchange for wings. If you want a dragon that looks like it evolved, it should look more like a dinosaur. Either wingless, or a pterodactyl-like critter - a biped, with forelimbs converted into wings.