This happens in Wyoming all the time. Wolves are one of the species that kill for the sport of it. The last article I saw in Wyoming they came in and killed about 25 sheep and only ate on 2 of them.
We are beginning to find out why our ancestors tried to get rid of wolves. Canada and Alaska have enough wolves that we don’t need any here in the continental U. S. They aren’t going to go extinct any time soon. Same is true of grizzly bears.