A couple of things that are being left out...
1.) The Officer was responding to a Disturbance call at that address...
2.) The dog was barking and approaching him...
Original report states suspicious person, disturbance was also reported but only in relation to the subdivision. I may be at the medias disgression here but out of the 6 articles I just went through none of them stated he was reporting to that address.. report of suspicious person selling meat out of the back of a pick up truck, I am sure that person was in someones yard... Report of suspicious person selling meat results in dead family dog there was a white pickup in the driveway why not pull up behind it to check or better yet I am sure you could see a refrigeration unit from the road..