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.

Dandil Snapdragon was the first member of the Royal Menagerie's Dragonvine Garden—a large pit sunk deep into the ground and thoroughly warded with spells, so that visitors could admire the vine dragons without being in any danger.  He enjoys showing off for visitors by growling, rearing, and lashing his vines, especially now that there are other vine dragons to compete with for attention.  Dandil loves the shrieks and gasps of his appreciative audience, especially when they feed him—by tossing in meat chunks.  He occasionally threatens his keepers, but this is largely a bluff—he knows that if he ever harmed one of them, he'd be released into the wild to fend for himself and find his own food.