Ninneko (忍猫, Literally meaning: Ninja Cat) are able to work with ninja through to their keen senses and flexibility unusual. During the series, several demonstrations felines were displayed, giving notability of similarities with a tanuki.
Living in a castle located in the district of heaven, do not possess affiliation with country or village ninja. Aiming purposes of protection, roam the corridors of the place and intercepting any threats.
- Cats of fiction sharing the same restrictions of real cats, as observed when Sakura Haruno battled and defeated one by throwing water, causing hypothermia.
- ↑ Third Databook, page 129