"On moonlit nights, I call 'em in with my voice," he says. "We find a pack and move into the area, keeping to the brush. In the moonlight, the wolves can see your feet in the thickets, but they can't make out who or what you are. They need to check out whether another wolf pack has invaded their territory, or if wolves from the pack have herded a stray animal. We've had from ten to as many as thirty-nine wolves surround us, howling to each other, moving in closer and closer. I keep howling back, which is what keeps them interested. They get so focused on hunting you, they forget about snowmobiles running or people coughing. And they get really close at times. Human scent doesn't seem to bother them. One wolf managed to sneak into the 30-yard buffer between my hunting buddy and me."