I know this sounds crazy Frenchie but the more you have of them, and the healthier the pack size the less damage is done to livestock. Their natural prey is deer of all types, followed by wild boar and as long as they have the numbers to hunt these then everything is ok. Lone wolves, or depleted packs, are more likely to go for easier prey. So shooting the odd wolf reduces the pack's hunting ability and actually increases the amounts of farm animals they take, and so is counterproductive. Also if you get a healthy pack settled in your area then it prevents lone wolves coming into it. The bigger problems arise in some southern and eastern European countries where they have a feral wild dog population - in Rumania they have about 3,000 wolves and about 2 million wild or semi wild dogs, some of which have formed packs in the countryside - unlike wolves they have no breeding controls (with several females in a pack, they're all at it) and are expanding at a far faster rate, whereas a wolf pack will only increase it's size according to the available prey in an area, and will not over hunt an area. The solution to wolves is to make sure that endangered livestock is behind electric fences and to make sure the government is paying for the costs, and also for damage reparation. The other essential is to make sure that domestic and farm dogs are under control.