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.

Cvetko's egg was brought into the Mayfly Cave by Ferreth and Solath when the pair were still hatchlings. Though he hatched around the same time as black Kaliista, he was closer to Ferreth. Later on, he and the purple became mates. He has provided the cave with a protective covering of thorny bushes around the entrance, to ward off enemies.<br/>Now the vine dragon is an easygoing, rather optimistic dragon. Unlike many vine dragons, he spends quite a lot of time out of his burrow and in the cave. He does keep a complex system of tunnels underneath and around the rock of the cave, but since his mate Ferreth lives in the cave, so does he, most of the time. He guards the cave from the outside, from any that might try to come in the cave without permission.