In the US most dairy cows produce about 8 gallons per day, or about 20,000 pounds per year.
I cow can easily produce 96 glasses of milk a day!
12 gallons
Depends on the individual cow, her breed, diet, body condition, etc.
Cows produce 19,825 pounds of milk each year. That's 2,305 gallons of milk a year or about 8 gallons of milk every day of her milking period.