WHY do people not contain their dogs? If the dogs are mauling sheep and causing that much damage, they might also attack horses, cattle, or even humans! The damage a dog can do to a horse or a sheep is horrific, one of the sheep mauled down the road is in a terrible state with the most awful wounds all over its back end and head. I can tell you right now that if a dog attacks my horse, I'll be suing the owner for vet costs.
There will be a lot of dog owners in my area wondering if their dog is one of the culprits. A farmer is well within his rights to shoot any dog that is worrying livestock on his property so one of these days someone will end up minus a dog or four!
I know for a fact that my dogs were not involved. They sleep inside at night and all the animals attacked were attacked in the early hours of the morning. My one dog that's a hunter is contained with a zap collar that she doesn't question, and my other two are very dependent on their people so they stay in or around the house at all times. MY dogs are properly contained and do not stray.
People who don't contain their animals shouldn't own them and honestly they're asking for someone to think the worst and shoot the dog if they see it in the paddock with their sheep, cattle, horses etc etc.