Our Dragons Are Different/Web Original

Limyaael has a few suggestions...
 * Tales of MU has recently introduced Vice-Chancellor Edmund Embries. He seems to be a classical Western dragon with silver scales, capable of taking on human form--the only form in which he's been seen thus far. He's very charming, very pretty, and very creepy. As Professor Hall says, "Few people mistake a noble dragon for a nice one more than once."
 * While we don't yet seem to have seen a 'real' dragon, the Whateley Universe has already featured a few variations on the theme. One student has a pet dragon (named Pern, of course) who's apparently a product of her manifestation power and can grow quite a bit in a hurry from his normally small-and-cute stature if bothered. At least two characters, one a student, are known to be hosts to dragon spirits, and then there's Tywyswyr...who, if we can believe his tale, is actually 'just' a very dragon-looking alien who's nonetheless quite wealthy and apparently a not-so-minor political player living right in the US.
 * In Addergoole Dragons are evil, shapeshifting faeries who eat people.
 * Glaserwyrm and Lord Dragon are both mythical beasts who take part in the "metahuman community" of heroes and villains in the Global Guardians PBEM Universe; Glaserwyrm as a villain, and Lord Dragon as a hero. They are both the last of their kind. Lord Dragon has learned to change into a human being, while Glaserwyrm just doesn't see the need.
 * Draco is a mutant hero who can transform into a classic western dragon. The aforementioned Lord Dragon treats him like a favorite nephew.
 * The flash game How to Raise a Dragon has players control a Dragon through various stages of life, determining it's breath powers, it's morality and the relationship between the Dragon and a "Hero". The Dragon can either be some kind of Evil Overlord, Good/Neutral Overlord or some kind of Heroic Neutral, using it's powers in various different ways (Using it's healing to help humans or raise a Zombie Army, for one).
 * The entire point of Dragon Cave. Besides the fact that they need views to hatch, which is a medium restriction, they have a variety of general styles: Easterns, Westerns, Wyverns, Serpents and more. Breeds range from relatively tame concepts such as 'White' and 'Red' to 'Guardian of Nature', 'Terrae' and 'Sweetlings'.
 * A skull eastern dragon appears in Chaos Fighters and it spits acid. Some species are sapient, others only about as intelligent as birds. Some are as tiny as a chicken, others as large as mountains. Some breeds will sooner rip you to shreds than look at you, others will cuddle with you in front of a camp-fire.
 * Neopets has four dragon-like Neopets: The eastern/western mix Draik, the Extreme Omnivore Skeith, the non-fire-bbreathing Shoyru, and the Scorchio, which are more heat-resistant than the aforementioned three. There are also various dragon-like Petpets like the Kazeriu, which is based on eastern dragons.
 * Although The Questport Chronicles has "standard" dragons as well, one of the main characters is a human who was permanently transformed into a dragon by an evil wizard.
 * In the online Spec Evo project A Scientific Fantasy, dragons don't breathe fire.