Chamaru

is a ninken from Konohagakure's Inuzuka clan and Akita Inuzuka's partner.

Background
At some point in time, Chamaru lost his right hind leg which Katasuke Tōno replaced with a prosthetic, leading his partner, Akita, to join the village’s Scientific Ninja Weapons Team.

Appearance
Chamaru is a medium-sized, light-coloured dog with a very bushy tail. His right hind leg has been replaced with a prosthetic one.