"Officers never want to harm an animal," Deputy Chief Pete Ritter said in a statement. "The dog came upon the officers quickly and they felt it was about to bite them."
Gabrielle Stropkai said Kita, her mixed-breed dog, was no threat to the officers.
"She avoided them," said Stropkai. "She walked around them. She never stopped. She never ran towards them."
The dog was shot 10 feet from its doorstep, where Stropkai said the dog was heading after going to the bathroom. Her son Hayden, 2, witnessed the incident.
"He screamed, and luckily, one of the neighbors, swooped him up and took him inside because she saw the reaction on his face," Stropkai said. "He just saw his best friend get shot. He's never seen anything like that before."
Kita gave birth to puppies two weeks ago. Without their mother, Stropkai has to make sure they're fed by bottle every few hours.
She hopes disciplinary action is taken against the officer.
A news release from BPD said the "officer made an instant decision to fire a single shot at the dog when it reached less than three feet from the officers."