Our neighbors have what looks like a Rotty-Lab mix and leave it outside all day and sometimes (like tonight) into the evening. It's 27 degrees outside and the dog started barking frantically. I went to the house to see if anyone was there and the house is empty and dark. I called the cops to report the dog alone in the cold and one came out but the only advice was to call the spca. I did and their answering service said that someone would follow up at some point. I figure any water left in any bowls in the yard has either evaporated or frozen over so I brought some warm water over and stuck it under the fence, but the dog is cowering near the house and afraid to approach the fence. I tried to bring our Chi over near the fence to get the dog closer to the water but to no avail. I'm wondering how long can this dog survive at these temps and what else I can possibly do. The cops said they would keep checking to see when the owners return but that's not helping the dog right now. Any advice?