> The smallest type of cow is a breed called Dexter, which was bred a small size for household living. > Cows were domesticated about 5,000 years ago. > Cows can see color. > Cows can detect odors up to 5 miles away. > A 1,000 pound cow produces an average of 10 tons of manure a year. > Per day, a cow spends 6 hours eating and 8 hours chewing cud. > The average cow drinks about 30 gallons of water and eats about 95 pounds of feed per day. > A cow stands up and lies down about 14 times a day. > A cow's heart beats between 60 and 70 beats per minute. > Cows can hear lower and higher frequencies better than humans.