Black Dragons are warriors. They are strong and capable in battles of force, but also ample magic users, capable of devastating opponents with their spells. Their bright eyes give them excellent night vision, which is why they generally hunt during the night.

Dragons are highly-intelligent reptilian creatures that—from a human perspective, at least—appear to live forever. Many different varieties of dragon exist, each with their own unique qualities, habitats, and behavior. Adolescence in dragons is usually marked by the growth of a hatchling’s wings, although not all breeds of dragons grow wings and some breeds have other traits that indicate the beginning of maturation. In Galsreim, dragons and humans coexist peacefully.

Jeeves is living proof that one doesn't need large muscles or even incredibly powerful magic to be a warrior.  He uses brains, not brawn, to overcome obstacles, and his wits have allowed him to escape from many a tight situation.  There's hardly a problem Jeeves can't solve or a dragon he can't outsmart anymore, thanks to years of practice, and he manages to do it all without losing his calm demeanor (at least where anyone can see him).  While hardly imposing in size, Jeeves is generally treated with great respect, for fear of becoming his next target.