The two most familiar interpretations of dragons are European dragons, derived from various European folk traditions, and the unrelated Oriental dragons, derived from the Chinese dragon.
The word "dragon" derives from Greek drakon, a serpent of huge size, a python, a dragon.
Dragons are usually shown in modern times with a body like a huge lizard, or a snake with two pairs of lizard-type legs, and able to emit fire from their mouths.
The European dragon has bat-type wings growing from its back.