Dragons are wide and varied in their appearance, abilities, habbits and of corse, their breath weapons.
The most well known is the red or fire dragon.
It lives in or near hot places and is thought to be the most vicous. It hordes gold and is known to attack people.
My favorite type of dragon is the white or ice dragon. It lives up cold mountains and can breath a misty vapour of extreme cold to freeze its prey. It is most comonly drawn as a blue dragon, but this is not wrong. Shadows cast on the dragon may cause it to look blue, or it may just be a very pale blue.
The dark blue dragon, or thunder dragon, of course breathes lightning. It lives in arid, hot deserts, (or so I think) It creates a cackiling sound whenever it is close and has holes in its wings, both caused by the electricity corsing through its body.
Green or forest dragons live in forests( surprise surprise) They spit acids at their foes and eat vegatation. They have leaf like scales and hide in trees.
Water dragons are called leviathans. I have a different page for them so check it out!
Zombie dragons are undead dragons with wings like paper and flesh hanging off in lumps. Swarms of flies buzz around this decaying beast, cursed to live a thousand lives, each one to serve a different master. They breath a breath of decay, that causes death among the ranks of the foe. They hang around graveyards to find their master, then to cause their version of Oblivion.
As I find more types of dragon and think of more to write, I'll add it, so don't worry if you can't find your type of dragon here!