>>25591099
a starving dog will not simply wait to be fed until it wastes away, it will at the very least demand to be let out of the house so insistently that even an utterly demented man would go and open the door, as we know hackman could since at least in this version of events he was the one who left the door open as it was found, enabling the other two dogs to come and go at will
for me the dog is the smoking gun here, fine the wife could have died of natural causes and fine hackman dying would follow from that since he may have been too senile to keep himself alive, but dogs have strong survival instincts and it doesn't follow one would die because they died unless there was foul play