Though some dragon myths are probably independent—anywhere with snakes or lizards could conceivably be a place that generates its own mythical scaly things—they became interwoven over time, Fee says, as travelers and traders brought stories from distant lands.
Some of the shift toward seeing dragons as primarily villainous, at least in Europe, may be traced to the way conquering societies mess with the myths of their subjects, Fee says.
subject to change in direction of a propagating wave
Or the fact that many myths have been refracted through the lenses of various conquering cultures, maintaining their monsters but often losing some of their more complicated pre-monotheistic worldviews.
That precarious balance between power and protection, fear and foresight, is something that any Game of Thrones fan could recognize in Daenerys’ uncertain relationship with the dragons on which she depends.
...battled by St. George, which may be a Christianized interpretation of the Greek mythological Cetus; the Norse wyrm Fafnir, a “great worm,” and the Norse death dragon Nidhogg, who gnaws on the roots of the World Tree that holds up the universe; Zohak from the Iranian Book of Kings; the Babylonian dragon Tiamat; the dragon Vritra in Indic mythology;...