Chewing Cud

This strange operation, like the carrying away of food by pocket mice, monkeys, etc., enabled these comparatively defenseless animals to gather nutriment in a short time and then retreat to a safe place to prepare it for digestion. Associated with this practice is a large, complicated stomach, normally consisting of four chambers, into the first and largest of which the hastily swallowed forage is first received. Then, when swallowed a second time, it passes on into the second or true stomach, where real digestion begins.