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.

Plot
Five years later, Puppy, now a full-grown dog, is seen with two puppies of his own. He seems to notice Ogami, who was listening to Sakura while hiding behind a tree, whereas she doesn't notice the presence of the Code:Breakers at all.