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.

Many people think that naming a dragon Jarnunvosk II is rude and weird. It implies Galbatorixs replacement dragon, Shruikan. However, Jarnunvosk II is actually the sister of the original Jarnunvosk, who was killed by Urgals. The two never met. Jarnunvosk II was still in her egg when her older sister died. Jarnunvosk is a serious and solemn dragon. However, she is a formidable opponent while playing badminton.