Dragons breathe fire when they are angry or they have been annoyed too much.
It is a method of self defense or hunting, much as the spitting cobra projects its venom at its prey or attacker.
Dragons (The evil ones) spit fire as soon as they notice someone The more sensible dragons only breath fire when they are annoyed.
Fire
How do fire breathing dragons breath fire?
As hot as fire.
i do not no
no if they were real but they do not exist
Dragons that breath fire are the baddest dragons foe a tatoo
Dragons (that can fly and breath fire) are not real and have never existed.
Cold DragsJeweled DragonsWeir Dragons (poisonous breath)Sore Dragons (napalm breath - not quite fire)Archaic DragonsTerrapodsKnucklersAll the sea serpents
Most dragons do breathe fire, but only aquatic dragons do not Not necessarily. Some dragons might be capable of spitting venom or injecting venom, and some may breathe poisonous gas, but not all non-aquatic dragons can breathe fire. Also, some amphibious dragons can breathe fire.
If your talking about the big scaly ones that breath fire and look like lizards with gargoyle wings, those are western dragons. Eastern dragons are the ones that look like snakes with the weird heads, that can't breath fire and have no wings, but can still fly. Weird....
Dragons have the power to breath fire but are usually protecting one specific object (which is usually its egg or treasure).