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.

Drache and Drago, with a history longer than they can remember, are very old dragons, and very senile. Drago normally seems kind and motherly (and happens to be gay), but is no better than his brother. Drache, unable to breathe fire, takes to stealing cigars from humans that he finds. He is fairly laid back and easy going when it comes to his brother's mad obsession over eggs and hatchlings, but when it comes to any sort of female dragon, he promptly knocks his brother out and seduces the female in question. As he has many eggs that his brother doesn't know about (abandoned, at that, as he leaves any eggs with the mother), he loves sleeping with any single-headed dragon, as he is sterile with them.

They are unable to fly, due to their wings being savaged by the many wars and fights they have been in. They are also covered in scars, for the same reason, though they often fight with one another - physically and verbally. The fact that Drago has raised as many as he has is amazing.