I see dragons in mythology often, from Britain to Japan. Though the forms often change, they are usually large, magical creatures and draw on similar concepts. Why and how did so many separate cultures come up with a similar mythological icon?
hi! more information is welcome, but meanwhile, check out previous discussions in the FAQ* (and maybe search the sub for "dragon", since I believe this question has come up several times since the FAQ was created)
*see the link on the sidebar or the wiki tab