Dragons are mythical creatures of power and imagination. Perhaps the most wonderful thing about them is that we are entirely free to imagine them however we wish - no wings, bat wings, bird wings, insect wings, multiple wings, tiny wings, huge wings... reptilian or mamalian or avian or some fantastic mix; any color and size you can dream of; four limbs or six or eight; claws or fangs or spines or a breath weapon or horns or ears... You stick six legs on a unicorn and it's not a unicorn anymore. I have always thought of dragons as having four limbs + wings and drakes as having only two legs + wings.