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.
Hellfire Wyverns are so named for their foul tempers and fiery visages. Their social structure places all females above all males, due to superior physical characteristics and violent dispositions. Forced subservience of the males causes them to become vicious, petty, antisocial, and passive-aggressive compared to the aggressive and social females. However, orphaned hatchlings raised by foster parents of another species can develop surprisingly even tempers and mellow dispositions, proving that their defining unpleasant nature is, in fact, a learned behavior.
When No Quarter entered this cave, there were two adult male Hellfire Wyverns already living here, and you may be sure that they were not happy at all about having a young female boss them around. But this only made her more determined to assert her dominance and it didn't take long until she was able to obtain superiority. Describing her methods here would only make her sound cruel, even downright evil, but the two Black Dragons leading the cave did not consider it necessary to interfere, so we must conclude that her behaviour is normal and healthy for a dragon of her species. Suffice it to say that she always lives up to her name.