The process of digestion in ruminants is different from that in human beings. They have three extra chambers in their stomach before the true stomach. The first chamber is the biggest and is called the rumen. In the rumen, food is made soft and pulpy with the help of cellulose digesting microbes. This partly digested food is brought back to the mouth and mixed with saliva from time to time. This is called rumination. After the food is swallowed again, it passes through the 3 chambers before it enters the actual stomach. After that, the digestion is same as that in human beings.