Terrae Dragons are primarily herbivores who prefer to eat from the tops of trees. However, due to their massive size, they must rely on small, specialized scales to absorb and convert energy from the sun. Since they live in tightly-knit groups, this form of energy absorption helps preserve the forests in which these dragons reside.

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.

Osoi Ha Koyo, meaning slow leaf of the Light Leaf family, is a slow moving, not too bright dragon. He is very strong and is large for his kind, but it isn't too often that he actually uses his strength and size. In fact most of the time the hatchlings will actually use him as a sort of obstacle course or as base when playing a game, which he doesn't seem to mind too much.