I had to learn the hard way about those wise old lead cows.
My second year elk hunting, I found a way into an area where there were alot of elk and no public hunters. Got there long before legal shooting light. The second bunch of elk I ran into was a herd of some 50 plus animals with a large bull at the very end of the herd. As I was trying to get into position to shoot, the lead cow spotted my movements and locked her attention on me. All that old bull had to do is realize the lead cow was onto something. She was 200 yds ahead of him, but she stopped and watched me. The rest of the herd stopped, but just milled around. He saw just that, turned around and headed back the way he had come. Had the reticle on him for a few seconds but he wasn't clear of the cows.
Ah, me. E