Seasonal Dragons take on the characteristics of the season during which they are born. Thus, eggs that are laid in spring match the pink flowers and green buds of spring, and those that are laid in the summer grow to depict the bright green of the forest trees and the yellow of the sun. Eggs laid in autumn display the bright colors of leaves falling from trees, and those that are laid during winter take on the appearance of the icy snow.

Dragons are highly-intelligent reptilian creatures that—from a human perspective, at least—appear to live forever. Many different varieties of dragon exist, each with their own unique qualities, habitats, and behavior. Adolescence in dragons 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. In Galsreim, dragons and humans coexist peacefully.

...As Sun'itda, reflected on how far he had traveled from home, the bright and ever-curious Tmbleaf hopped from tree limb to tree limb above him and reflected on how it had been four thousand years since any season-dragon last came so far from the Longish Mountains.  The last of them, her ancestors, had settled in this distant forest and evolved into much smaller, more quick-witted creatures.  She was curious about this strange dragon who smelled like summer blossoms and was large, though not so large as her ancestors, and who didn't seem as dull-witted as strange dragons were supposed to be.  It wasn't long before she leapt down from the treetops to introduce herself, and from thereafter the two were close friends, eventually mates.

Though her dearest became accustomed to the new forest and adopted by her people, sometimes Tmbleaf still noticed him doing strange things.  One of these was naming their child Tmbl'itda, and when she asked why, he could only tell her that it felt right.