Dragons

I can't get the idea of Dragons out of my head. Ever since I was little. Where the hell did they come from? Every other mythic creature is just a simple transference from another known creature;

The Giant - a large man?

The Cyclops - a one-eyed large man?

Pheonix - Bird on fire?

Goblin - well goblins and orcs are pretty awesome but they really are just dirty, evil things.

Fairy - small person with wings?

Centaur - half man, half horse?

Minotaur - half man, half bull?

Griffin - half eagle, half lion?

Ok I think you get my meaning. My point is, where the hell did Dragons come from? Are they just a massive lizard with the wings of a bat? Oh and they have horns. Oh and massive teeth. Oh and steel-like scales. Oh and they breathe fire. Oh and they are magic. Oh and they protect castles. And I honestly don't have much backing in this statement, but, haven't they been prevalent in many ancient cultures' art?

I come to the conclusion that Dragons exist/existed. And the Loch Ness Creature. She exists too.

Legendary Ethan..