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.

Tanrei likes to collect seeds and soil samples from the different biomes, and because her living cave is near open meadows, she keeps a small hodgepodge garden of whatever she can manage to grow from the seeds. Her cave is filled with different plants and seeds she has picked up while exploring; sometimes hatchlings bring her seeds hoping to see what they will grow into. Some of these "seeds" turn out to be rocks, but Tanrei keeps them all anyway.