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.

Many dragons in EG's Cave avoid Penny Layne, not because of her notoriety of being a Vine dragon, but because of her strange habits. Penny Layne casually talks to herself and the rotten trees around her day in and day out due to her lack of a social life. Each time it rains, she has a different reaction. Maybe one time she will bounce her head up and down as if she would like to frolic in it, and another time she will scream bloody murder because she believes it is burning her skin. All in all, she is a quite bizarre creature and thus has no friends and no mate to call her own.