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.

Black dragons are warriors. They are strong and capable in battles of force, but also ample magic users, capable of devastating opponents with their spells. Their bright eyes give them excellent night vision, which is why they generally hunt during the night.

Ka Sera was hatched by a dragon trainer, but who had yet even begun to learn how to go about doing it, it was pure dumb luck that it even worked. But the trainer was a nice guy, and Ka knew what kind of games to play, so she taught him.

But she was lonely. Though her trainer had found and hatched more dragons, none of them were black dragons. A paper advertisement blew in the wind, and got stuck on Ka. There was a black dragon egg that did tricks at a local circus. She brought the paper to her trainer, Viirin. He understood her feelings, so they went.

But when they got there, the show was already over, whatever it was, so they decided to take a walk. They didn't go far when they heard the clicking of claws on cobblestone, following them. The egg from the show had hatched, and by the look in the hatchling's eyes, had been chased away. Ka felt bad for the other hatchling, and wanted to be his friend. They grew up together and eventually had a baby.