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.

Stone dragons have a tough outer covering made of a stone-like material. They eat rocks, using the minerals they contain for nourishment and to keep up their stone outer shell. They rarely move, and are the heaviest of all types of dragons. Although they have wings, indicating flight ability, no one has ever seen a stone dragon flying.

Robert is Rae Mary's protector and companion. He is the unwaveringly silent guardian of the MartinDraconis Clan's hatching caves. Occasionally he will wander out of the cave to watch Rae as she teaches the young, or tends to her gardens. He is otherwise often a stout and unshifting but ever diligent protector.  Robert has dreams of watching his own hatchlings play out in the caves and warrens he protects. Lovingly he watches over the young. Feeling pride as they grow to be strong and productive members of the clan. Robert was known for rescuing Heather Burris, but after she cried HUMAN too many times, and knowing that his clan has a special pact with the Human clans, he got tired of her games and settled into his sedate and gratifying life.  Rae very much appreciates this young dragons help and protection, she considers him a true friend!