Each Fever Wyvern carries a unique and very deadly disease on the spines of its tail. To make up for a lack of physical strength, the dragons use this disease to their advantage by poisoning prey and fending off attackers. The illness will quickly render victims helpless before eventually killing them. A Fever will track its prey until the target can no longer move. Usually a solitary breed, these dragons will only come together during mating season, and will flare out the brightly colored sails along their wings to help attract potential mates. Although it has been observed that the wyverns are nocturnal, they will often pick an open spot of sunshine to curl up in and sleep as the day passes by.

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.

Just because one's a sadistic psychopath doesn't mean one can't have a sense of humor! Priding himself on the creation of particularly virulent strands of bacteria, Scazincaer captures and imprisons creatures smaller and weaker than himself (pygmy dragons are favorite targets--prey that can talk back is so much more fun, after all!), tortures them, applies his bacteria, and then leaves the wounds to fester. After a few days of entertaining his guests with his impeccable wit and delightful knock knock jokes, his victims inevitably die--and those who perish quickest, of course, are hosts to the most lethal bacteria, which he then adds to the colonies on his tail; years of repeating this cycle have created some truly terrible strains indeed, much to his delight. Scazincaer claims his degenerate nature is the result of his being bullied as a youngster by bigger, uglier dragons, and that he's the real victim here. His former captives would likely disagree if they weren't so busy being dead.