A few years ago, while calling one evening for coyotes, I called in a black bear. It was a medium sized bear the best I could tell. Season was a couple of months away. Besides that, I only had a .223 AR.
I had just finished calling and had packed up my gear, when I decided to walk on down the path in the woods a bit to see what the small clearing ahead looked like. I hadn't hunted the area before and was curious what the terrain was like. It was getting dark but not enough to need a light.
As I was punching some keys on my GPS to take coordinates, I heard this "huffing" sound. I looked up and wondered what it was, then heard it again. Standing the trail that ran across the top of a ridge to the point where I was standing, was a black bear about 30 yards or so from me.
I yelled at him and he backed down, went off into the brush, still "huffing" and making all kinds of noise, as well as breaking sticks as he departed. I watched my back trail on the way out.
I used a variety of sounds when trying to call a coyote, but mainly rabbit sounds.
Just goes to show you never know what you might call up.