No. They eat corn because corporations have discovered that they can fatten a cow up much faster and cheaper with corn than with grass (which is their natural food). This means that these corporations can produce a lot more meat, but it also means that the cows won't be as healthy and the meat will be of a lower quality.
The complete predicate is "eat corn and other grains".
cows will eat any grain, but most cows eat corn
Cows do not eat corn in their natuaral diet. They eat grass. Cows are being fed corn because it is cheap and plentiful. Because corn is not a natural food for cows, they need help digesting it and are fed antibiotics to keep their digestion healthy.
Cows will eat long grass. Haven't you ever heard, "The cow's in the corn?" Corn is a tall grass.
Yes.
Yes.
Cows eat corn, any grain, alfalfa and clover, and silage (either green corn stalks or other plant that is chopped into small pieces and fermented in a sealed environment).
No cow is forced to eat corn. It's like candy to them.
Almost always corn.
Yes
They cultivated corn and other grains, gathered nuts, berries and fruits, and hunted game.
Cows have not changed through the years they still eat the same things; vegetation and grains.