Here's how it works:
* Rumen: This is the largest stomach and is where the majority of digestion takes place. The rumen contains bacteria that break down plant matter.
* Reticulum: This stomach acts as a "hardware" stomach, trapping heavier objects and passing them to the rumen.
* Omasum: This stomach absorbs water and minerals from the food.
* Abomasum: This is the "true" stomach, where enzymes break down food like in humans.
Cows do produce milk to feed their calves, but the milk is produced in the mammary glands, not the stomach.