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.

When Khou was a tiny little hatchling, his mother let him wonder on his own, while she gathered food for their family. Unfortunately their mother had gone too far, and Khou could no longer smell her. Under the given circumstances, he lost his way back to their shelter and had to wander alone in the cold, windy valley. By the time he learned how to protect himself, Khou would be long dead, if it weren't for a human noticing the weak, famished Finn hatchling chewing on a leaf in a side of a road. The human took Khou in and nursed him back to health. When it was time for the tiny hatchling to leave, he refused to go by chewing through any ropes or cloth that held him away from the human. And so, till this day Khou has been living with her, time from time even now enjoying chewing on a plant in his owners garden.