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.

Sunset dragons are closely related to sunrise dragons. However, their behaviors differ greatly. Sunset dragons generally live alone or in small packs. They are more active in the evening, hunting and performing all of their daily tasks as the sun sets.

Hailing from Greece, Dismas was often seen by its residents as a sunset god due to his tendency to appear at that time. He was heavily worshipped until a dragon expert called him out for being nothing more than a common dragon. He fled the country and later met Isis, a dragon from Egypt who had also been given a god-like treatment and then exiled for impersonating a goddess. The two roamed an unknown country and later met with a guardian dragon and her black dragon companion. Cindra and Erebos lead them back to their home, where they were "adopted" by Haizia and Bharath.