A somewhat old-fashioned or literary word for a puppy. In modern everyday speech, 子犬 (こいぬ) is far more common.
Puppies often appear in old tales.
magic word to comfort a frightened child
A soothing phrase used to calm a scared child and help them sleep. This is a set expression, not a literal reference to a puppy. Rare and mostly found in folklore or traditional lullabies.
My grandmother would say to little me, 'Inunoko, inunoko, go to sleep.'