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.

Strong, silent and largely solitary, Gorgon watches over the halls of Riddle hold. He prefers the night, and his own company. Whilst he doesn't shun his fellow dragons, he does spend hours and hours patrolling the borders of Riddle hold. The only two headed dragon amongst the Riddle horde, Gorgon seemed to be a serious, friendless if polite creature. However, a young female two headed hatchling called Medusa has been adopted into the hold, and her innate curiosity and cheerful nature has meant that the once sulky silent dark blue giant now has a light blue flittering shadow following him wherever he goes. Surprisingly, he likes it. He has never had enough friends to gain a a proper warrior's nickname, but Medusa calls him 'big blue'.