A quick timeline:
-Gold bar was found in the late husband's house on October 19.
-They were both last seen on October 28th (Wednesday). Beverly was having lunch at a restaurant and Gregory was seen driving away from his house at around 10 pm.
-Friends of Beverly reported her missing on Sunday, Nov 1. Police check Beverly's house and find her dog left unattended. They check Gregory's house and find a roast in the Crock Pot and his dog left unattended. They check the late-husband's house and find Gregory's white Toyota there.
-Late in the evening on Nov 1, it was reported that Gregory's house was broken into. Here is the paragraph about Gregory's house being burglarized:
"In another odd twist to the situation, Sheriff Howard said that late in the evening on Nov. 1 a burglary was reported at the home of Gregory Giannonatti, where the police had been earlier that day. When authorities arrived they discovered the flat screen TV in the yard, clothing in bags and a cell phone that had been at the residence earlier was now gone. The Sheriff also noted two weapons may also have been taken from the residence."
From this article:
https://www.facebook.com/BevandGregGianonatti/posts/1057146771011492
They discovered the dog and the roast cooking at Gregory's house earlier in the day on Nov 1. Later that night, somebody broke into his house and tried to steal the TV and clothing; and, took a cell phone and possibly some weapons. (It was reported elsewhere, that in addition to clothing there were some
towels and pillows in the bags as well.) So, at that point, the dog had already been removed from the house. LE stated that the dog was being cared for at Amherst Animal Hospital in Butte.
So if somebody went back to the house to retrieve some clothes, the cell phone and some weapons, the dog would not be a concern, because it was already gone. Maybe they planned to take the dog as well, but since it was not there, they couldn't. The TV being moved is a mystery, unless somebody did that to make it look like a random burglary.