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.

Caduceus Teom (or more accurately, Caduceus and Teom) is something of an oddity in the clan, and can often be found deep in conversation with himself, to the point where both heads are so absorbed in conversation that neither is paying attention to where the body is going. Long outings have often been disastrous, with the poor split lost in the middle of nowhere, and Teom adamantly refusing to ask passing dragons for directions. Both heads are usually quite laid-back, though there are times when the heads bicker amongst themselves as to which one of them is Caduceus and which one is Teom.