There are an estimated 920 different breeds of cows in the world Cows came to America with Christopher Columbus People first domesticated cows about 5000 years ago The Holstein produces the most milk of all breeds Cows spend 6 hours a day eating and 8 hours chewing cud A dairy cow can produce 5 gallons of ice cream a day Cows can live 25 years if people would let them The city of Boston was laid out by cow paths In an average herd, there is 1 bull to every 30 cows A cow stands up and sits down about 14 times a day The average dairy cow produces about 10 gallons of milk a day A cow drinks about 30 gallons of water per day Cows can detect odors up to five miles away The age of a cow can be determined by counting the rings on its horns Old cows in India have their own nursing homes Cows can see color Wisconsin has the most dairy cows, Texas the most beef cows There are approximately 350 "squirts" in a gallon of milk