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.

Tom and Barry aren't the closest set of twins. They often quarrel dangerously, to the point of hurting others and, to a greater extent, each other. It is curious to note that it is the slighter brother, Barry, who initiates these fights. Only can the quieter Tom talk him out of trouble, and even then he seldom listens. At times like those he expresses a wish to be separated, while Barry does not.

Either way, such a procedure is out of the question due to their breed's physiology. Despite that, the brothers insist on being referred to individually and are very vocal about their distinct personalities. This is more particular to Barry, whose greater motivation is to stand out -- but even then he finds a shield in Tom, by far the healthiest twin.