Ask yourself, what is a dragon?

Webster's Dictionary: drag.on \'drag-en 
1 archaic: a huge serpent 2:a fabulous animal usually represented as a 
monstrous winged and scaly serpent or saurian with a crested head and
enormous claws. 

Visualisation : 

Thick, long bodies, often humanoid in shape. Skin covered with 
scales, four powerful legs. Two bat-type wings, sometimes with claws on the 
ends. Wedge shaped heads, sometimes sporting horns, with longish necks. Some 
breeds of dragons are renowned as shape shifters, or able to blend into their 
surroundings. When you think of the word 'dragon' most people would see an image 
of a european dragon. These beasts were most often portrayed as 'evil' and 
hoarded great treasures, killing anyone who would be so unlucky to venture near 
it's lair. 

 Flying dragon breathing fire 
 Dragon kickin' hiney on a drawbridge
 Warrior trying to kill a dragon with a sword 
 Dragon breathing fire into another dragons face 
 Dragon sun