The shooting occurred Monday in the 5400 block of Tennyson Street in Denver. Deputies were responding to a burglary alarm when they got the wrong address and shot and killed a border collie, Ziggy, belonging to business owner Jeff Fisher.
Wilfred Europe III, the deputy who fired the shot, has been reassigned and is no longer on patrol.
Sheriff Darr says his deputies did go to the wrong address, but his office has a different account of what happened.
Darr says deputies arrived to find the door to the business open. When they made contact with Fisher, Ziggy slipped away and acted "aggressive" towards the deputies.
Darr says Europe kicked the dog, but it did not retreat. Europe then shot at the animal twice, hitting Ziggy once.
Darr says he is not sure if the deputies ever made it to the correct address.
Fisher claims deputies forced their way in. He says Deputy Europe shot and killed Ziggy as the dog was walking away from the deputies. Fisher says Ziggy was at least 15 to 20 feet away when Europe opened fire.
Fisher says Ziggy came to work with him every day. Ziggy was a 35 pound, 8-year-old blue heeler/border collie mix who Fisher says was not aggressive.
This is not the first fatal shooting involving Deputy Europe.
Deputy Europe shot and killed 40-year-old Don Cambron last February during a traffic stop. He was cleared of any wrongdoing.
A team of investigators are looking into the dog's death.