I can't comment on that as I'm an engineering student, but if you ask me, dragons are simply a different species from ryu.
Yeah! I agree!
Although to me it's the same thing as saying the Skyrim Dragon (2 legged) is a different species from the European Green Dragon (4 legged), just as it's a different species from Toothless in the How To Train Your Dragon (somewhat flat faced).
There's no reason to suggest that any of these dragon species are biologically compatible. They are all likely to be different species.
@Ddraig is a lewd dragon….
en.wikipedia.org
I think it is rather interesting just how for most of the world (especially the Indian-Persian-Arabian zone), dragons are infact equivalent to snakes, serpents and snake-eagles. Popular culture really skews the perception of what a dragon is honestly.
Honestly, to me at least, 'Dragon' is more of a trope/plot devices that serve some kind of purpose, and most often than not, a manifestation of some kind of either natural phenomenal, manifestation of something, or human qualities, with the east leaning toward the former, and the west toward the later. In most Asian myths and stories, Ryu/Long are manifestation of storm, typhon, or thing like divinity, heavenly, prosperity, or riches and wisdom. In most Euro folk tales, dragons almost exclusively the manifestation of human quality rammed up to the max, like greed, anger or envy. Sometime, they could also be a manifestation of thing like storm, drought or power too.
So, in my book, things like wyrm, sea serpent, ryu, winged lizard, and hell, even the feathered serpent of South America are dragon in my book. Different type of dragons, yea, different species but in the same family as far as mythological creature go. Maybe like how Chimp, Ape, Monkey and Human are related......
I dunno, just my two cents