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.

Dark green dragons, once they mature, appear to become an entirely different species. However, this isn't true. Rather, they burrow underground and get nutrients from their vines. These vines are sometimes referred to as Dragon Grass. These dragons are very violent, and will use their vines to capture, kill, and eat anything that moves, as well as nearby plants. Luckily, their range is limited and they cannot use magic. Dark green dragons tend to be easy to spot since they usually kill all plants around them and thus are usually surrounded by a large clearing.

Hinadani is not quite as violent as others of her Dark Green race, but she would certainly be if she could.  Soon after reaching adulthood, Hina fell in love with a powerful Grey dragon, Mahabali and gave birth to three eggs, all of whom were abandoned.  Mahabali, however kindly he is, is controlling.  He managed to cow her, tenderly, into a submissive state.  Now, Hinadani is a simpering mess whenever her mate is around - which he is rarely as he takes other mates, leaving her immobile in her clearing.  She lives in wait of him and rarely eats what he does not bring her.  Hinadani loves Mahabali none the less for his long absences, as he is her life, despite the cliche.