They reintroduced 11 gray wolves into eastern Arizona, in the late ninties, and soon 6 had been shot and killed and one was missing.
They rounded the remaining ones up and put them in captivity for breeding. There was one litter of pups produced, but someone killed the mother, and they couln't find the pups in time. The adults all had tracking collars so they could monitor them. When one stopped moving they went and found them shot, over and over.