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.

Lady of the Fishes and Birds is the primary aquatic hunter for the weyr.  She is, of course, an extremely adept fisher, but has been seen to heave her full length from the water to snatch an unwary bird, before splashing back into her element.  When not busy hunting, she likes to slither up near shore to build sinuous castles in the sand, then slap her great tail hard on the water to destroy them with a devastating wave.  She has deigned to mate once with a young storm dragon, and their single egg has been fostered elsewhere since she was not interested in raising it.  Most of the male dragons do not interest her very much, since they seem to be uncomfortable in water, no matter the depth.