My step mother left three dogs behind when she passed. She thought she had made provisions for them with some neighbors, but they reneged immediately. They were actually grifters who repeatedly befriended the elderly so they could inherit stuff. Boy, were they pissed when they didn't get her house!
So my wife and I took them in. Found a loving home for one of them and all three have now passed their natural life times. So even though her provisions fell through, as executor I honored her wishes the best I could. That experience was illuminating: As an executor all I can say is that a death brings out the worst in some people.