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.

Redtip is as dangerous as an angry Hellfire dragon, but this isn't because of his attitude or tail spines- it's because of his affection. Redtip likes to curl up around other dragons for comfort but can only do this with his own kind because if he does this with something else, then he risks brushing them with his tail, pricking them and injecting tiny amounts of venom. He's tried to overcome this by wrapping himself around a tree to sleep, but because of the shade made by the leaves, he sometimes burns off the leaves in an effort to make himself comfortable, while still satisfying the needs of his species.