Ah yes. The mighty dragons. The Drake race are actually shape shifters. While their natural form is a large reptilian form, they are extremely flexible and can take a humanoid form if they so desire. They're rather weak in humanoid form. When in full beast form, they can devour most all humanoids, or at least cause some rather serious wounds. They have an immense affinity for gold, and most things shiny. Killing a dragon is sure to leave the adventurer with plenty of treasure.
They're mainly based off of the dragons from Flaky Pastry, for an example start with the very first strip.