Lesser Dragons

The only true Dragons in the World are the descendants of the Elder Wyrms, but there are many other creatures that are considered 'draconic'. Almost all such creatures originated on the island of Ladon, in the Ladon Sea, or in the valley which surrounded both at the heart of Aaior: the so-called Crucible of Wyins. During the Cataclysm, these creatures were scattered across Aiaos.
The humble pseudodragons are the smallest Draconic species. About the size of a large crow, but with a whip-thin, snakelike body, they are gregarious, inquisitive and fearless, traits that did not serve them well when mistaken for wyrmling dragons or drake hatchlings. Only Ladonia still harbours pseudodragon flocks, but many mages value the more solitary offshoots of the breed as familiars, for their intelligence.
A small number of pseudodragons found their way into some of the faewolds, where they were used as hunting hawks by faerie knights. Some of these were transformed by fae Magic into the first fairy dragons.
Drake is a broad term, covering a range of small-to-large, wingless dragons of animal intelligence, including ambush drakes, guard drakes, drake steeds and audrakes (a form of massive, semi-reptillian cattle, able to survive in harsh climates by feeding partially on ambient Dzenmisa.) Like the pseudodragons, the drakes suffered greatly from the greed of mortal arcanists, and they are common only in Ladonia in any form, save the desert-adapted audrakes of the Empty. Quarter.
Dragonnels are a breed of horse-sized, winged dragons. Mostly hunted to extinction outside of Ladonia, a few flocks remain where the local culture was able to tame the dragonnels as mounts, making them more useful alive them dead.
Jabberwocky are rare, Faewold-dwelling dragons, although they sometimes escape to the material. They have little intelligence or sociability, and few even among the Dragonborn argue against their hunting, as they are voracious eaters and destructive by nature.
Wyverns are huge, bipedal winged dragons with venomous stings. Often hunted, they thrive in inhospitable areas thanks to a limited ability to subsist on dsenmiza as supliment to material food (mostly meat.)
The last known land-dwelling draconic is actually a subject of some dispute. Many question if the Terrasque is a dragon at all, others whether it is truly land-dwelling, and not a small number whether it exists at all.