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.

Guardian dragons have large shields on the end of their tails. Although the shields appear to be heavy, they are light, yet nearly unbreakable. Guardian dragons use their tail-shields, as well as their wings, to deflect attacks and protect others. Often, they will guard the eggs and hatchlings of a nest while others are away. They are generally peaceful, and will not retaliate unless necessary. They have no need to forage or hunt, as they are fed by those they protect.

Heart's Forsaken was an just an egg, lying around abandoned when Killema found her. Killema is another dragon on Franny's scroll. Killema raised Heart's Forsaken but abandoned her when she finally grew up, leaving the young adult guardian abandoned. This is how Heart's Forsaken got her name was through her abandonment. Heart's Forsaken could be considered a dragon that is calm and peaceful at times, playful at others, and fiercely when those she has claimed are threatened. She is a guardian to all first and foremost. She will play with the little ones, but if her ire is arisen, she will be fierce.