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.

Hengst enjoys running next to his friend Wtaer's bog, usually racing her, who runs on the bog, next to Wtaer. He loves to run off cliffs and glide. He oddly only eats animals that eat grass, a food item that he enjoys. He also likes chewing on the sugarcane that grows near Wtaer's bog. He is extremely fast, going over 100 mph when running.