First responders found heavy flames on the top floor of the 1½-story wood-frame home on Kent Street near northbound Route 17 shortly before 1:30 p.m.
They had the fire knocked down quickly and under control within 15-20 minutes.
The dog suffered smoke inhalation and required treatment, responders said.
Teaneck and Englewood firefighters assisted their Hackensack colleagues. Hackensack University Medical Center sent BLS and ALS rigs.
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