Demiguise

The Demiguise is a peaceful, herbivorous creature that can make itself invisible. It is found in the Far East, but only wizards and witches trained in their capture can even see them. It resembles an ape with large, black eyes and long, silky hair. Demiguise pelts are highly sought after as the hair can be woven into Invisibility cloaks. Cloaks made from their hair eventually turn opaque, losing their invisibility effects as time passes.

The Demiguise's ability to make itself invisible is used to symbolise the number zero, in the runic alphabet.