Illinois deer heard has been vastly reduced, first coyote's and coy dogs everywhere ( I take them every chance I get and coy dogs are the most dangerous ) but where you might see one in a hunting weekend, nothing to see 20. We were at a meeting about 20 years ago where the state denied putting wolves back in the national forest, we had actually seen one. DNR and the Forest Service denied putting wolves in the Shawnee. Farmers said that since they weren't wolves they could kill them and the Forest Service guy , who denied putting them there, cautioned the audience against shooting the wolves.
Evolution and natural selection took care of them once for a reason.