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.

Thorongil is best known for his grim attitude and fairly stern demeanor. Though he has thawed since taking Farea for a life-mate, he is still quite solemn, speaking rarely and with words that tend to strike close to the point, even if they risk sounding a bit cold-hearted. Nonetheless, Thorongil and Farea are held in high regard by their fellows for their dedicated behavior towards their home and its security. Spending much of their day guarding the cave, the couple also passes time patrolling the borders of their mistress's territory or by carefully watching over the caves mischievous hatchlings; they tend to spend their nights standing beside the cave entrance while their scroll-mates lie peacefully within, unyielding no matter the circumstances. Thorongil was the twenty-fourth dragon to be listed on Vinr's scroll.