Why would he call the DNR to report it?
Shot it but didn’t kill it.
Someone report a shot wolf and it might come back to him, so create a CYA story.
Also, this is a refuge open to the public, others could have been around, as at some point could a wolf carcass.
Because if no one calls the DNR, they will be able to say that no such attacks have been brought to their attention.
We went round and round with the DNR here over cougar, and they said there were no cougar--until someone dropped one on their doorstep (literally). If you don't report it, it didn't happen, and all the bambi/brother bear people will continue to project la la land.
An amazing number of people don't get the fact that out in the boonies, there are things that look at you as just another item on the hot lunch menu.