|Fantasy game art from Dragon Age: Origins Ultimate Edition (Dragon Age: Origins, the Awakening expansion, and all official Downloadable Content).
Dragonlings are wingless hatchling dragons. They often hunt in small packs. Even at this young age they are capable of breathing fire.
From Codex entry: Dragon:
Newly-hatched dragons are roughly the size of a deer and voraciously hungry. They live for a short time in their mother's lair before venturing out on their own. The slender, wingless creatures are born in vast numbers, as only a few ever make it to adulthood.