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.

Green Granny is a mother figure to all of the dragons. Abandoned, sick and weak hatchlings seem especially attracted to her because of her gentle nature, which has earned her the name "Green Granny". She is the dragons' teacher, wise in all her ways, ever watchful and wary of danger to herself and to her young charges. Beloved by all, she is well cared for; she never has to hunt for herself, because she is kept well fed by all her friends in exchange for her services as a teacher.