The only way to know if a dog has rabies is by taking a sample from their brain. The only way to do this is to put down the dog. Since all the dogs were with each other they all had to be put down. I love dogs to no end but they really had no choice here. These were not dogs anymore in the sense we think of dogs. They were wild animals that were a danger. What were they suppose to do with the dogs? Take to the human society to be adopted?