> but that on one occasion he met two coyotes together, and they began circling him.

He must have done something to react fearfully. I've charged at literal packs of 10 to 15 of them, yelling and enjoying myself, only to have them scatter in complete chaos. With children and no adult present, coyotes are a real danger, but when they meet adults that show no fear, they're amazingly nervous. I know of only one North American attack on a human adult in recent history (a rather petite woman) that was fatal.