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Friender can become a tank, car, jet, or a submarine, and can breathe fire. Friender was originally the family dog - brave and fierce, who got killed, but was revived as a trusted companion.
Neo Human Casshern: Casshern travels with his dog partner Friender. Kakashi and his eight Ninken, who he mostly summons for tracking rather than battle. Akamaru, who in Part I is small enough to be carried in Kiba's hood, is as big as a pony by Part II, and carries Kiba on his back. The entire Inuzuka clan (the name means "dog soldiers") work with large, wolf-like dogs, at least one of whom can talk. He was an orphan, homeless boy, and she was her only friend. Mazinger Z: Saijyo -a secondary character appeared in episode 26- and his female dog, Norako.
Not so much in later seasons, which has Arf both spending less time in her wolf form and spending less time together with Fate.
Lyrical Nanoha: Fate and Arf in the first two seasons. Ena in Laid-Back Camp is frequently with her dog when she isn't at school and will send cute pictures of him to Rin while she's out camping. We don't know her exact breed, but she's speculated to be a Samoyed since she's white and fluffy. He's likely to be either a Japanese Spitz, or maybe a really small Shiba Inu. Japan has one too, and his name is Pochi. Germany has three dogs: Blackie ( German Shepherd ), Berlitz ( Dobermann ), and Aster ( Golden Retriever ). Helen ESP has Victor, Helen's seeing-eye dog with whom she has a psychic connection.