Dragons are creatures with nearly unlimited life spans. They can survive for long periods of time, and no one has found a dragon that has died of old age. Adolescence 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. Once they hit adolescence, hatchlings change quickly, maturing to their full forms in only 2 years.

Dragons don't communicate with each other verbally, but they will growl to scare off predators and frighten prey. Young dragons will emit an extremely high-pitched squeal when they are frightened. To communicate, they use telepathy with each other and to speak to other creatures.

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.

Hinote Sekitsui's name roughly translates to "fire spine," which is a reference to the deep red frills along his back.  Not unlike Jekyll and Hyde, Hino has two faces that he shows the world.  One is that of a quiet, intense, even brooding character.  Most of the time, he stares silently at the world around him with molten red eyes, giving the impression that he is concentrating intently.  However, when unattached females are nearing their breeding season, he begins to preen and act quite the fool.  He will practically flip over backwards to attract attention, usually incurring more embarrassment than romance.