5 Fun Facts About Cows 1. Cows kill. A 2012 'ABC News' report <br />stated that cows kill <br />an average of 22 people a year. As a comparison, sharks only <br />kill about six people per year. 2. Cow tipping is a myth. Cows weigh 1500 pounds, <br />on average, and sleep lying down. <br />Tipping them is a near-impossible feat. 3. Cows <br />have crazy <br />digestive systems. Their stomachs <br />contain four pouches <br />that food must pass through <br />before being digested. 4. Cows with names <br />produce more milk. Giving them names promotes an affectionate relationship, <br />which reduces their stress. <br />Stress-free cows produce more milk. 5. Bulls can't see red. They are red/green colorblind. The movement of the bullfighter's cloth is what stimulates their aggression.