I regularly drive by a herd of buffalo. They are confined with a five foot high tensile fence. They always seem to be in their pen when I go by...
One time, I saw a man, presumably the owner, standing next to one that had it's head poked through the fence, eating that greener grass on the other side. The man was kicking it in the head just as hard as he could. That animal didn't even blink, just kept chewing.
I'm not advocating kicking animals in the head, but I sure like the fact that IF I did kick a cow in the head, she wouldn't be standing there for the next one.