If the guy has livestock there's nothing the DNR can do, it's lawful to kill a dog if the farmer belives it's going to cause harm to his/her livestock, the dog is as good as dead, was told that by a county deputy.
Don't get me wrong it's sad that it happend but i urge everyone to educate themselfs about laws pertaining to this. A guy i coon hunt with goes around the evining we're going to hunt to get permission to run his dogs it has help this situation from happening to him, this way the landowner know he's going to be hunting or running his dogs.