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.

Black dragons are warriors. They are strong and capable in battles of force, but also ample magic users, capable of devastating opponents with their spells. Their bright eyes give them excellent night vision, which is why they generally hunt during the night.

Pengo Praejudicium, or "Hammer of Damage", is actually a distant cousin of Pengo Cruoris. Her name has to do with her violent mauling of her victims. Both dragons have spent nearly all their lives together in a powerful bond.

The inner color of Praejudicium's wings are of a rare magnificent gold, while her cousin's are of a deep red, but both have trim scales of a slightly glossy black, just as the rest of their bodies.

Basically, they look almost exactly like any other black dragon to the naked eye, spare the wings.

Both have only attacked another being in order to hunt or defend themselves or each other, but in all occurrences, they have had a tendency to kill their victim when not defeated.

Alas, it should be warned to never frighten either of these two, under pain of certain death.