Puppy

Puppy (子犬, Koinu) is the pet puppy of Sakura Sakurakouji and is the offspring of Dog, who had been killed in the first episode.

History
Puppy is the child of Dog, a dog Sakura fed at the beginning of the series after the homeless man taking care of her was killed by G-Falcon. After Dog was killed, Ogami found and gave Puppy to Sakura.