Nin-dog

A Nin-dog is a ninja's partner. One of the nin-dogs is Akamaru, with his partner Kiba Inuzuka. They are best friends, and Kiba would never go in battle akamaru. Another nin-dog is Pakkun, Kakashi's dog he can summon with other nin-dogs that can help Kakashi with tracking a person, thing, etc. The first time he summons all of the Nin-dogs was to find Zabuza in the mist.