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.

Two headed dragons are a special breed of dragons. They have two necks, two brains, two mouths, but one stomach and one main body. The two heads usually work together, but there are times when they will fight each other, attacking back and forth. They use their sharp teeth and wings to hunt large animals, and rarely eat plants. It is unknown what would happen if a two headed dragon were to mate with a one headed dragon, since it has never occurred. They only mate within their breed.

Zamblor is one of the most feared of all dragons and King of the two-headed dragons on Hilentia. He and his queen Dorambla rule the Planet Hilentia in the Tuquensim Galaxy. Zamblor is a master hunter. While most other dragons try to lure their prey to them, Zamblor goes after his prey in intimidating fashion, snapping his teeth and clacking his claws. Once his prey is spotted he uses telepathy to render the victim under his control and proceeds to feed on his prey while it is still alive. Zamblor occasionally has to go to battle with a group of rouge dragons from the 'Crazy Eyes' Clan. These renegades are Zamblor's only dissenters and have claimed a section of valley and adjacent plains that runs through Hilentia as theirs. Otherwise, most other dragons are loyal to Zamblor and Dorambla, as they enjoy a 78 approval rating amongst adult dragons with two or more hatchlings.