GROWLING/BARKING:
WOLF is usually a pretty astute judge of who deserves a growl. Most of
the time, it is folks wielding guns. He absolutely hates guns, especially
when they are threatening Sully...*The Pilot - As mentioned, he growls at Gen. Chivington and his gun, drawn against Sully.
*Cowboy's Lullaby - Sully confronts the would-be thief, who draws his gun and asks Sully what he wants. What Sully wants, naturally, is for Mr. McCall to put away the gun, and of course, as Sully points out, so does WOLF! McCall puts away the gun.
*The Prisoner - WOLF is left to guard Sully's weapons belt lying on the ground, when he and Mike go in to see about Cloud Dancing. A rifle toting soldier bends over to take possession of it, and WOLF clearly objects. The belt is safe.
*Saving Souls - WOLF growls and bares his teeth at one of the "outlaw brothers" who is in a fight with Sully and Kid Cole.
*Permanence of Change - WOLF faces down a rifle toting Mr. Daggett. This distraction enables Sully to get the gun away, and deliver his warning to Daggett not to allow any more harm to befall little Maryann.
*The Legend - Also the episode in which WOLF does his first ever, leaping attack, which he directs at one of the Reid gang.
*The Hostage - WOLF growls and runs to attack Huested Currier, who is pointing his gun at Brian and Matthew, but then Currier points his gun toward WOLF and shoots. This is WOLF'S only known gunshot wound, although WOLF was shot at in *Bad Water.
*The Homecoming - WOLF growls at the gun Chester is holding on Sully, after which Sully assures the couple that they don't have to worry about WOLF. Later on in this episode, WOLF also growls at the nearby cougar and is ready to confront it, but Sully tells him to stay put.
As discriminating as he is, WOLF has, on occasion, been known to growl at "non-gun toting" persons. He did so at John in *Halloween II, Miriam in *Reunion, and Martin in *Birdman, as well as, Ethan in *Father's Day, and Hazen in *Indian Agent.
In the case of Ethan and Hazen, I think it was WOLF'S innate sense that they were not nice fellows. As for John, Miriam, and Martin, well, extenuating circumstances, I suppose!? John was pretty scary to look at, Miriam was initially afraid of WOLF, and Martin was making his aborted 'flight,' attempt, which might have looked like an attack from above.