Some people say that it is physically impossible for dragons to breathe fire, but in Numen the Slayer I went scientifical on how dragons breathe fire. I drew inspiration from the real-life insect known as the bombardier beetle. The bombardier beetle has several glands in its body that combines combustible chemicals and spray them at attacking predators. I once saw a video on Animal Planet of a bombardier beetle being attacked by a tarantula and the tarantula was left with a burnt face full of toxic chemicals. I used a similar concept with the dragons in Numen the Slayer. In my book, dragons have a pair of glands in their mouths that are full of combustible chemicals like the bombardier beetle. When the fire is not in use, the glands are sealed shut, but when the fire is in use the chemicals are sprayed from the dragon’s mouth in two streams. Individually, the chemicals are harmless, but when the streams cross the explode in a blast of flaming liquid. This liquid operates like napalm in which it sticks to whatever it touches and keeps burning until there is nothing left. Trying to wipe off the liquid will only smear it more. Also, like greek fire, dragon fire would spread and grow faster when exposed to water. The only way to extinguish dragon fire is to bury it in sand in order to starve it of oxygen. In addition to its obvious destructive capabilities, dragon fire also has beneficial properties to human civilizations. The ashes created from dragon fire are among the best fertilizer around similar to ash made from volcanoes and forest fires. Therefore, after a battle involving a dragon takes place farmers and merchants would flock to the battlefield to harvest the ashes because they not only provide bountiful crops but are highly profitable in markets.