Is this control of species monitored, or done in a scientific manner - or is it just a positive from the hunting ?
The species I mentioned.....coyote, fox, bobcat, etc are not monitored here in Alabama, aside from the "requirement" that if a bobcat is killed, a form of some sort is supposed to be filled out with details so's they can "monitor" the population. I don't know anyone who fills them out. One guy in a hunting club adjoining our property killed 9 bobcats two or three deer seasons ago. I've only killed 2 over the years. One while hunting, and the other while walking up the road.
Alabama has no closed season on fox, coyote, coon, possum, bobcat, groundhog (woodchuck), or skunk, all of which are predators/pests, either preying on livestock, etc or eating/ruining crops.
As to wolves, we do not have them here, so I can only give my opinion. I have seen photos of wolves killing elk, mule deer, etc, and can only say that if I witnessed such an attack in person, pictures are NOT what i'd be shooting.