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