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.

Kuro Kanda is a warrior with an odd name, given by his owner. This black dragon has a short temper and will bite or harm anyone who goes near his side. However, he will not harm any innocent dragons. For some odd reason, Kuro does not care if his three dragon eggs are been given to other owners who soon claim these eggs. His wife (a purple one) hopes that her babies are taken care of with more love than what Kuro treats them. Like all black dragons, he knows how to use spells while defending himself or his mate. And thanks to Kuro's night vision, he hunts down food for his family.