I practice with a howler tube. It travels for miles. I find tracks all around where I was the next day. Listen to wolf howls and mimic them.
I found distress calls bring in everything, even grizzly in winter. Nov 22 a grizzly track went past where I was calling from. I'm not interested in bears, coyotes or cougars. I'm on a save the moose mission.
If you get a reply settle in for a while. If it is the pack thinking they are coming to the alpha male kill it makes for some exciting times. Only watched it on video. I had 2 sit on the road 500 yards away and look at me. I didn't know what they were, like the neighbours dogs, so I didn't shoot.