Environmentalists wanted wolves reintroduced to NE Oregon. Oregon fish and Wildlife agreed and began tracking them as they moved in from Idaho. At that time, 3 years ago, they stated there were NO wolves in central Oregon. Personal observation by myself and other hunters said ODFW had it wrong. They are illegal to kill. Now the deer population has declined about 40+ % and they are trying to figure out the cause. Not sure what plan B is going to be going forward.
Cougars are an issue also, but may be taken if you have a tag or claim self defense.
Cougars and bears also aren't anywhere even close to HALF as devastating on local big game populations as a wolf pack. Not even in the same ballpark, no comparison, no contest.
Cougars, might as well be ghosts sometimes, are VERY solitary and transient, I've seen evidence of them having been "just passing through" and that's it. There's really just not that many of them and, while the odd one does attack a person or begin taking "easy pickings" from livestock, it's very uncommon. Odds are if they happen to be in the area you'll never even know it was ever there at all, and it's departure will be as unobserved as it's arrival.
Bears are omnivores, especially black bears, but even grizzlies eat a ton of plant material in addition to hunting and killing other animals. Really there's not much they won't eat haha.
Wolves are hypercarnivores, they quickly grow in number and come to dominate whatever place they live in if allowed to. A lot of mouths to feed, intelligent, capable of taking down anything on this continent, and territorial. We can't really coexist with them in any notably inhabited region; especially for agricultural reasons too!
Grizzly bears don't have half the range they used to because it just wasn't viable to share the real estate with them (heck they used to be here in Saskatchewan! The plains grizzly was a thing…and as Yosemite Sam says, this town wasn't big enough for the both of us)
Cougars and black bears are still around; there's probably MORE black bears than there used to be at least here.
Wolves in my neck of the woods have been effectively eradicated and kept that way. In the true north of the province, heavy boreal forest and not many people, they are going strong and no one has a problem with that. But this did indeed used to be their turf. It's couldn't stay that way if we're here too, again mainly regarding livestock.
I grew up on a farm, I know a ton of farmers, some of them have indeed seen wolves in their lifetime, all of them have a "kill on sight and shut up about it" mentality. And they're not like that about bears or cougars at all, they get excited about it if they got to see a black bear just doing his own thing in a field, and a cougar sighting is so rare and special and doesn't cause much alarm when it happens.
Wolves are just a whole other kind of bad news.