A family argument over who would walk the dog turned deadly when a dad shot and killed his son during a wild shootout Sunday in Chicago, police said.

Bullets flew at the South Woodlawn Avenue home in the city’s Burnside neighborhood around 8:20 p.m. after the dispute broke out between the men, ages 43 and 22, the Chicago Tribune reported.

The double shooting was the result of a “fight [between] father & son as to who was going to walk the dog. Both shot at each other,” Chicago Police Department spokesman Anthony Guglielmi tweeted.

Both men, whose identities were not immediately released, were shot multiple times and the father was critically injured, according to the Chicago Tribune.

The younger man was rushed to Advocate Christ Medical Center in Oak Lawn, where he later died.

Cops discovered two weapons at the scene.