"Parks says he went for his shotgun, and fired three blasts at the animal. The cow then slowly walked away, and was eventually put down by a veterinarian."
Shot placement, shot placement, shot placement!

I was run over by a cow coming back in the parlor through the exit after milking when I was 17, big dumb animals. At the same dairy I watched a sick cow take 2 or 3 rounds of 30-30 to the head to go down from 10 feet away.