While thinking of something original for the dragons in my fantasy series, I drew inspiration from the bombardier beetle. Bombardier beetles have various glands that combine combustible chemicals and when they are attacked by a predator the beetle sprays super-hot toxic chemicals that are the same temperature as boiling water. This gave me an idea for making my dragons breathe fire. What if dragons have similar glands in their mouths that ignite when they come into contact with each other? That way, a dragon’s fiery breath would not be pure flame but a thick stream of flaming chemicals. Now think of those chemicals operating like napalm by sticking to you as it burns you alive. That is essentially how I have imagined the dragon fire in my fantasy book.