The Inu Inu no Mi, Model: Wolf (イヌイヌの実 モデル：黒さや Inu Inu no Mi, Moderu: Kuro saya?) is a Mythical Zoan-type Devil Fruit that allows its user to transform into a Black Shuck hybrid and a full Black Shuck at will. "Inu" is Japanese for "dog", and a Black Shuck is a ghostly black dog which is said to roam the coastline and countryside of East Anglia, so they are in the same family as dogs. It was eaten by Sirius Black