Waterhorse Dragons received their name due to their horse-like physique and endearing behavior. They are capable of surviving out of water, and when on land their skin secretes a gelatinous goo to retain moisture. However, their large paddle feet are better suited for swimming, and waterhorse dragons tend to move very awkwardly when on land. Waterhorses are very friendly dragons and enjoy playing with humans.

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.

Terrafil is a rather strange dragon in his habits. For one, no one's ever heard him speak, which often makes him very difficult to understand. He chooses to communicate by miming everything instead, often appearing as if he's playing an eternal game of Charades. He also holds a fascination with frozen hatchlings, sometimes spending great amounts of time with them, though he does manage to creep them out what with wanting to play for hours on end.

Although Terrafil is a little messed up in the head, not everything about him is bad. He is a hunter of Clawclan, bringing large catches of fish to the cave every now and then for the dragons to sample. He also tolerates humans to a certain degree, though he asks just one thing. Please don't try to ride him. Not only is it a terrible idea, but it's also bound to end badly.