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.

Orthrus is not only a powerful guardian, but a best friend and companion to Tokami and her pack of beasts. His right head (from his point of view) is steadfast, stubborn, impatient, and even a bit cruel, but his heart is in the right place and at times he may have his sillier moments. His left head is just, quick-minded, and much more relaxed and serious than his left counterpart, though much to his demise he may be unintentionally humorous at random. Characteristics aside, he is considered to be Tokami's most reliable pack member, and was thus deemed the third in command after Tokuba and herself.