I saw the show too but as I was in and out of the room I thought it was mentioned the car was left unlocked and I was incensed that anyone could come along and let them out. I am glad that was not the case. I really don't know what choice the cops had and I wonder if their actions re dogs would have been different on a hot day instead of a cool night.
Didn't he walk home too over the road? I do realise there are time restraints re testing for drink driving, and rightly so and I wonder if it was day and hot whether the response re the dogs would have been different. Maybe keys given to a cop who would take them home, but who knows.