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.

Unlike with most vine dragons, the area around Leafbird has not been cleared of plant life. However, this is not due to any purposeful decision on the part of Leafbird, but instead can be attributed to her sheer laziness. She spends most of her time napping, and tends to attack only when she is too hungry to fall back asleep. The only exception is on those occasions Aethia (another of Kitsurus dragons) digs her up from her burrow, in which case she has been known to go on berserk rampages that leave nothing but debris behind, and which have been known to last for hours on end.