Horse Dragons have equine-shaped bodies and hooves instead of claws, which allow them to be fast runners. They specialize in running takeoffs, which are quicker than taking off from a stand-still. Horse dragons are able to stalk their prey from the ground then quickly execute an aerial attack for the kill.

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.

Roman is considered the master hunter of the flock, and so has taken up the responsibility of hunting for those who can't feed themselves, namely the injured or newly emerged hatchlings. He doesn't particularly like young dragons, finding they have too much energy that they don't know how to control, which is a hazard when he tries to teach them how to hunt. As a result, the teaching duties have been handed off to more patient individuals.