Do Dragons Breathe Fire Through Their Nose. Usually, while bathing them or allowing them to swim, the water level shouldn’t go beyond their shoulders to prevent it from getting into their nose. Some dragons in mythos can also breathe acid, frost and poison gas.
In medieval times, people believed dragons were real, and thought dinosaur bones where proof that dragons existed. If you think of dragons as supersize reptiles with a nasty bite, the komodo dragon is the real deal. They can't breathe fire, but they kill pigs, deer and water buffalo with their mouths.