Last year I was working at a museum, and they did an exhibits on dragons from around the world as cultural icons, myths, "real" dragons (plants and animals named after or resembling dragons), marketing tools, art, etc.
It is a shame that it was last year, though. This information would have been wonderful to have for the exhibit. Very interesting stuff.
(we did have some trouble tracking down Central and South American dragons, though, not counting Quetzalcoatl.)