Dorsal Dragons are so named because they have large fins along their backs that can be raised and lowered at will. They use these fins to regulate body temperature; they raise them to cool off when they become overheated. The bright colors on the fins double as a means of attracting mates.

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.

Song of Unhealing is one of the stranger and more unnerving dragons in the Cave. His name comes from the beautiful and oddly hypnotic melody which he hums almost incessantly, a song without words. Strange things happen when Unhealing is around; birds fall dead from trees, distorted laughter can be heard on the wind and dragons who irritate or obstruct him seem to suffer from terrible bad luck. The White Dragons report that their patients always seem to get worse when he is in the vicinity, and it is rumoured that he once caused a dragon who was pestering him to burst into flames. If anyone asks Unhealing about these occurrences, he will tell them the tale of a hatchling called Ben who drowned and whose tormented spirit can be summoned by the song that he hums. No-one has ever been brave enough to try humming the song themselves, however, so whether anyone else could summon the spirit—if it exists outside of Unhealing's imagination—is unknown.