This list of mythical creatures that begin with this letter and I am constantly gathering information from each continent, and is continually being updated.
Mandrake (Medieval folklore)
Mandrake roots became highly sought after in their native Mediterranean habitat, and attempts to protect them from theft are thought to have been the source of the second mandrake myth, which stated that a demon inhabited the root and would kill anyone who attempted to uproot it.
In the Middle Ages, it was believed mandrake could only be uprooted in moonlight by a dog attached to the base of the plant by a rope, otherwise a person would go insane from the plant’s screams. Over the centuries, legends surrounding the mandrake’s different sexes and human shape grew stronger, reinforced by the medieval doctrine of signatures.