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.

Theredris could seem hard hearted and cold. This is not true; he is only a bit shy and prefers to be all by himself.  Until he knew Vesperya, he was a lone dragon, with neither family desires nor needs. Now he spends all the night time with his wife like newlyweds dragons even if they already got adult grandsons.