Grazing, or just plain eating if they're at a feed bunk or bale of hay. However, some, if not most, state that the answer to this question is rumination, even though, technically speaking, "rumination" is not exactly the whole "process of cows eating."
Eating grass
Energy...
Cows make milk from eating grass.
Cows don't any crops on farmville.
Do you have thoughts? Yes. Then cows do.
Plant-eating animals are generally considered herbivores.
grazzing
By eating your sandwich
The oxpecker, but it often actually sucks blood out of wounds on the cows as well as eating parasites.
the cows name is kelly
Contaminated by what?
Heterotrophs get energy by eating plants. The process is called food chain.