““After wolf number 10, the father of the first group of pups born in the park, was killed by a local hunter after wandering south of park boundaries, program officials rounded up the mother and the helpless pups, put them back into the acclimation pen, and provided them with food for several months. Even when the pups got a bit older, program managers feared that the mother would have a hard time taking care of them by herself when they were released. Then, on the day they were to be released, in an event that no biologist has yet been able to explain, a bachelor wolf living miles away in another part of the park showed up outside the pen, just in time to form a new family unit.””
