Dark green dragons, once they mature, appear to become an entirely different species. However, this isn’t true. Rather, they burrow underground and get nutrients from their vines. These vines are sometimes referred to as Dragon Grass. These dragons are very violent, and will use their vines to capture, kill, and eat anything that moves, as well as nearby plants. Luckily, their range is limited and they cannot use magic. Dark green dragons tend to be easy to spot since they usually kill all plants around them and thus are usually surrounded by a large clearing.

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.

Viperweed is vicious, in stark contrast to her tamer's other dragons. She is territorial and will snap at anyone who gets too close to her underground lair, which is located outside the cave to prevent any incidents. Even her tamer has difficulty going anywhere near Viperweed, and must feed the vicious dragon with forceps to avoid getting her hand chopped off. Only her tamer's bravest and toughest dragons have attempted to breed with her, and even then they take an enormous risk. As her demeanor is vicious, she will not care for her own hatchlings, so her tamer and her other dragons must do so for her.