Consuming dairy, you might think, does not harm animals. But the dairy industry, under the system of intensive factory farming, is cruel. Cows left to their own devices live, on average, to be 20 years old, but industrial dairy cows live a mere 4 or 5 years. Cows are kept constantly pregnant and lactating, and given hormones to grow to adolescence more quickly. The milking machines cause pain and injury. The tiny baby bulls are removed from their mothers within one day of being born and are kept in the dark, then killed as veal, while the calves are removed at one day old and fed milk replacers. Baby cows don’t get the milk; we do. But that milk often contains pesticides, pus, hormones, and antibiotics.