A guy who stays up all night wondering if there's a dog. Infinite Jest, by DFW
You should know more than your dog.
A retail store.
A polar bear
He heard that the chickens at KFC were pretty hot.
They say he made a mint.
A drummer.
Swarm.
He stayed up all night wondering if there was a dog.
Occam's razor
An argument.
You stay up all night wondering if there is a dog.
Someone who stays up all night, wondering if there is a dog.
Amazon.
He stays awake all night wondering if there's a Dog.
Somebody who stays up all night torturing himself mentally over the question whether or not theres a dog.
Lay awake, contemplating the existence of Dog.
A person that lays awake late at night and ponders if there's such a thing as a dog.
Scramble