Breathing fire is impossible for alive organisms. Possible but doesn’t coincide with other internal processes which are more important. Possible but didn’t happen. Fire breathing animals existed but died in the process of natural selection (I include humans in natural selection so we could have killed them: dragons.

Chinese dragons do not typically breathe fire. Western dragons are portrayed as much portlier creatures, with big claws and large, leathery bat-like wings. They look like giant lizards, and are often depicted with spines or rough scales.

If we’re talking Reign of Fire dragons than yes and no. They don’t really “run out” since everything they need is produced internally. Instead they just need time to recharge if they use it too quickly.

I believe that wyrm is just an interchangeable name for a dragon, used most notably in the Dungeons and Dragons setting as a stage of a dragon’s life. Wyverns are similar to but separate creatures from dragons, having only four limbs (two legs, two wings) and being unable to breathe fire.

Fire Drakes, as the name suggests, breathe fire, while Cold Drakes either breathe snow and ice, or nothing at all. In Dungeons and Dragons, Drakes are akin to Wyverns, in that they are simpler creatures but without the power of flight.

Diversity among dragons Some dragons have wings; others don’t. Some dragons can speak or breathe fire; others can’t. Some are only a few feet long; others span miles. Their body color may range from green, red, and black to unusually yellow, blue or white dragons.”

Originally Answered: How do dragons breath fire? All dragons could have two holes in there mouth ,these holes would excrete a highly flammable gas during exhaling, this gas is then breathed out of the mouth ……… When the spark hit the gas, it would light, creating a plume of fire.