a wolf wrote it.
joking aside the Yellowstone phenomenon gets often cited. We have a long way to go in Europe (cough cough Switzerland, Austria) where the wolf by the rural community is still seen as a huge problem to the way of life (hunting and farming). I wonder if some modern solutions where wolves that are tagged anyway can be combined with trackers on cows/sheep/goats that subscribe to this data, so that the shepherd knows that a wolf is about to approach the herd. The bigger problem in these communities is that hunters have been doing this for generations, I myself come from such a family, my gramps, even my mother my uncle everyone was a hunter. They all believe that the hunter plays an important role in keeping a check on population of deer etc. As Yellowstone has shown reintroducing the wolf hasn't just solved that issue but also brought back types of trees, flowers and biodiversity that was previously lost. All because they allowed apex-predators back to where they were. But try to convince somebody in the countryside about this ... going to be a tough sell.