County records reveal 21-year-old Codiedale Corado is charged with aggravated assault for the Aug. 9 incident.
The documents state Corado was walking his pit bull when a man's chihuahua started barking.
Corado is accused of threatening to kill the dog owner and his chihuahua before taking his pit bull back to his apartment and returning with a gun, pointing it at him.
When the dog barked again "it began to run down the stairs when (Corado) shot the chihuahua, killing (the victim's) dog," court records read.
Corado was arrested a day after the incident, on Aug. 10.
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