The fire broke out just before 1:30 a.m. in the unit block of Oak Street.
A resident returning from work saw the fire, called 911 and began knocking on doors, but no one answered.
According to crews, the fire began in a downstairs unit, number 3406.
The resident of that apartment was not home when the fire started. Her dog was unable to escape and died in the blaze.
Upstairs, in apartment 3408, two residents were inside but did not hear the frantic knocks on their door.
Police knocked down the door but were not able to go inside because of the heat and smoke. When firefighters arrived, they rescued both.
One man is listed in stable condition at an area hospital. He's being treated for smoke inhalation.
The fire forced the entire building to be evacuated. About a dozen people were affected. All those evacuated were back inside by 6:00 a.m.
The only apartments damaged were the apartment where the fire started and the unit directly above it.
The Red Cross is assisting the residents of both those apartments.
The cause of the fire remains under investigation.