Split Dragons use their sharp teeth and wings to hunt large animals and rarely eat plants. They are intelligent dragons who enjoy mental challenges, preferably alone; Split Dragons are normally solitary except during mating season. When mating, many dragons come together in a group to raise their eggs and hatchlings. These groups tend to be very noisy—reminiscent of a thunderstorm—and last only until the hatchlings are capable of surviving on their own.

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.

Two-headed dragons are unique enough to deserve a separate classification from ordinary dragons. They have two necks, two brains, two mouths, but one stomach and one main body. The two heads usually work together, but there are times when they will fight each other, snapping back and forth. Their unique anatomy prevents them from breeding with single-headed dragons.

Twin and Tale's heads—unlike Two-Face, whose two heads differ greatly in their personalities—are absolutely in sync, making her appear as one dragon rather than a being with two minds. Twin-Tale enjoys telling stories to the little ones, as Sora can tell from the way they gather around her in the evenings.

Twin-Tale's favourite story is how one evening, following another dragon tamers hint, Sora went to the cave to look for the female Split she needed. However, as the cave was attacked by the horrible Lag-Monster at that time, she was unable to find the cave, let alone the hatchling she was looking for. When she came back to her home cave, though, she found Twin-Tale sitting next to her eggs, looking as though she had no idea why Sora would be so surprised.