This picture suggests that maybe livestock congregate near exposed water, too.
Water is needed to raise the country's livestock, be it cows, chickens, horses, or rabbits.
In 1995, the United States used about 5,500 million gallons each day for livestock water use purposes, such as drinking, cleaning, and food production. The states that used the most water in 1995 for livestock needs were Idaho, California, Mississippi, and Arkansas.