Everyone has an opinion, and some of the posts here have little evidence to support that opinion. So I'll take a crack at stating an opinion, and try to substantiate it based on experience.
1. Was out caribou hunting in NT and was skinning some caribou and a really, really large male black bear appeared at the site. He had a white patch on his chest. First off, I know that he was definitely, the largest black bear I had ever seen in my life, and I estimated he was about 600 pounds. The bear came up to the area where we were doing our skinning and gutting. The bear was hungry and wanted some meat. So I scared him off a couple of times and realized that he'd be back so I placed some of the shot up meat in the spot he'd been standing. He returned in a few minutes to the same spot and I could hear him crunching on bone and eating the meat. I figured the bear had been given enough meat to satisfy his hunger, but he wanted more. Every time I bent down to get back at the skinning, the bear would take a couple of advance steps towards me and the caribou. He was about 35 yards away from me.
I called out to my Dene friend ( lifetime trapper) who was a couple of hundred yards away, and let him know what was going on.
He said your going to have to shot him, he's an older bear and has learned to come to where he heard the shooting, and he's determined to get that caribou your skinning. My Dene friend was working on a caribou himself.
I wasn't getting my skinning job done, so eventually I had to shoot him. What I found out about bears in the NWT (and most likely everywhere else) is that, the communities are far apart and the bears are completely wild. They are always dispatched quickly when they do come into a community as they will kill and eat dogs and are considered to be unpredictable. I suspect that the degree of wildness in an animal like a bear is a constant factor, and ought not be taken lightly.
When I walk in the bush I carry a gun, be it for deer, moose, rabbits, bush chickens, geese or ducks. I consider it a safety factor. As I've experienced first hand that a bear has the serious potential to attack. Do I shoot every bear I happen to see.? No, but I respect the bears place in the wild. I'm not a bear hunter but could be if I wanted to be. And for those that do hunt bear, that's ok in my books.
Wolves are wild and need to be considered fully capable of dispatching their quarry quickly and effectively. Given that they travel in packs, they must be respected at all times. Generally they will stay away from humans but have the potential to attack a person for food. So common sense tells me to carry a gun in the bush. As I have meet to packs of wolves in my time, but they disappeared as quickly as they appeared. Yotes, are a menace to newborn deer and livestock such as sheep. But I've seen them bothering cattle too. They have the potential to establish a pack, and to attack a child, a pet and possibly an adult.
I asked a farmer one time if I could hunt his swamp on his far. He looked at me and said. You can hunt it on one condition. If you see and Yotes, shoot em. So I said ok... He recognizes the potential harm that they are doing to his new-born lifestock and knows that the Yotes will hunt rabbits, deer, small livestock, pets, and have the potential against humans too.
So I carry a gun in the bush. First to put food on the table, and second to deal with animals that could endanger my life. But I keep in mind that these animals have a place in creation and we must have proper respect and understanding for them.