Once the young boy discovers that his dog can talk with his grandfather's old pipe, they go on adventures and solve crimes.

Feeling drawn to a quiet puppy, Takeru adopts the animal and heads off on his bike back home.

Sherdog introduces himself as the living legend Sherlock Holmes, and believes Takeru to be his partner Dr. Watson.

Adopted by a teenage boy, he seeks to continue to solve crimes and protect the world from murderers.

His entire family is made up of cops and detectives, making his meddling in crime scenes less questionable.

Takeru is a kind and compassionate young man who makes many connections with people but accidentally gets himself into strange situations.

A big hint to her connection to Irene is when she (indirectly) serves Sherdog tea that she used to make for him when he was human.

She accepts Sherdog at first, but comes to loathe the puppy after he destroys things and sits in her personal rocking chair.