How does a cow eat?

A cow uses its strong rough tongue to grab and teeth to shear (which are only on the bottom row). Then the product the cow eats goes into the rumen to be fermented. It then is regurgitated and chews as cud. The cud is reswallowed, refermented in the rumen, then goes through the rest of the digestive tract for nutrients to be absorbed into the cow's system, before exiting as feces.