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.

Magi dragons are, as their name suggests, primarily magic users. They rarely use physical forms of attack. They eat anything they can kill, which is almost everything. They won't kill unprovoked except when hunting, although they may kill humans if in danger. Their strong magic makes them one of the most feared breeds of dragons.

"Hope is all well and good, but we need caffeine."

Mohinder is brilliant-- some might say genius, in fact-- when it comes to his field.  On the other hand, when it comes to pretty much anything else, he's somewhat oblivious, to the point where, when embroiled in certain research, he may forget to eat.  He is a genial dragon, though, and he makes friends quickly, despite his occasional suspicious moments.  Most people appreciate his moral compass.  It always points due north.