According to the TV station, the burglary alarm was going off at the residence where the dog resided.
I'm sure the anti-police posters on FR would complain if the cop simply left the residence because noone answered the door. How was the cop supposed to know that the burglar hadn't tied up the family in a home invasion? Was he really supposed to leave because he couldn't get permission to search when noone answered the door? I believe the burglarly call required the cop to search.
Just like there are anti-military reporters at Newsweek and elsewhere in the MSM who are willing to believe the worst about our fine soldiers and marines, there are anti-police posters on FR who will blame the cops no matter what they do.