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.

Kanonope's heads bicker constantly about more or less anything they can think of - common topics include the state of the cave they live in, their opinions of their neighbours, the most efficient way to fell a certain animal and the insolence of young dragons today. Whenever they manage to reach an agreement on any subject at all, they drop that discussion as soon as possible and start on something completely different.

In fact, when not debating, Kanonope get along with each other better than most two-headed dragons; they give the opposite impression simply because both of them genuinely enjoy heated arguments. Listening to them for a while would reveal that the two heads periodically switch sides after one particular quarrel lasts for an extended length of time. According to one head, this encourages creativity of thought and allows them to consider various points of view. According to the other, it doesn't.