Pillow Dragons are covered in enormous amounts of fur affectionately referred to as fluff. Despite their deceivingly large size, they can still fly even with such tiny wings because their bodies are remarkably light. Pillow Dragons have a habit of sleeping for up to eighteen hours a day, waking only in short bursts. During their few waking hours, they take the time to hunt for prey. Once a pillow dragon becomes an adult, its fur grows very slowly. Pillow dragon fur is used to make very expensive and valuable cloth known as “dragon cashmere.”

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.

Morpheus spends most of his day and night sleeping, and constantly yawning and laying down to rest while he is awake. Once anyone has slept against his fur, nothing will ever be as comfortable; his master has made most of his blankets and even the insides of some clothing out of extra fur he had. Though Morpheus himself doesn't mind, nor does he mind when one wishes to snuggle up against him, though he's probably asleep at the time anyway so he couldn't exactly object to it.