In my mind when I hear the first grunt, to me it sounds like a natural form of “I challenge you“. When the opponent responds with a grunt of her own,it sounds like a natural form of “accept the challenge“. That exchange always makes my cock swell. If either woman screams, I believe it’s a primal signal that she’s badly wounded, or frustrated by the her opponent’s clear dominance. Either way, her screams will bring confidence and more to her adversary. All in all, these guttural sounds will always attract and effect nearby males, like me.