Common Pygmies are sweet in temperament and palate. They spend a fair amount of time foraging for and scavenging food but have a particular fondness for sweet tasting treats, such as honey. When pickings are slim, they can hunt songbirds and small mammals. Common Pygmies stay in large groups, migrating alongside their food supply. Although capable of the same basic vocal sounds of most other dragons, Common Pygmies prefer to communicate through body language. It is perhaps no surprise, then, that Common Pygmy hatchlings are rather affectionate.

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.

Pygmy dragons are the smallest category of dragons, being on the same scale as domesticated animals. They are often found around concentrated populations of dragons, relying on their larger brethren to ward away potential predators and leave scraps. As such, the majority of a pygmy’s diet is scavenged. Due to their tiny size, pygmies do not breed with larger varieties of dragons.

Yumi was the first Pygmy dragon to enter Nice's clan of dragons. Her egg had almost been stepped on by Pennae Flyfree, a Horse dragon, but was stopped by the much smaller, Slick Lizard, who saw the egg and warned Pennae. Slick took the tiny egg and brought it back to the hatchling cave to be taken care of by Stone Jackson and Balloon Bobi. From there, Yumi grew up to be a fast little dragon, and likes to stand at the top of the cliff with Earth Moves, and jump down, and fly away... like a bird.