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.

When water dragons mature, they lose their legs and the ability to survive on land, entering the water permanently. They are adept swimmers and eat whatever fish are in the lake they live in. They tend to inhabit the same lake for their entire lives, although a few live in the ocean and swim all over the world.

Blue is a color, not a mood, at least not to a dragon like Blasphemy.  He's overall a happy dragon, one content and amused with the smallest of things.  He values his friends and chooses them wisely, but never outright alienates another dragon, even if he doesn't like them.  He's charismatic and often knows the right thing to say or do without actively thinking about it, which makes him very likable among the rest of the cave, and many often come out to visit him in the nearby lake before hunting.  It's funny to think that Blasphemy could ever get tired of water, but he prefers warm water to cool water, which is sometimes hard to come by.  It makes him cranky when he's forced to go deeper into cooler water for whatever reason, and he often stays out and away from others afterward, so that he doesn't snap at anyone or hurt their feelings.  One of the things that really cheers him up, though, is watching some of his sky-bound friends as they soar and zoom around.