Ruminants are a group of mammals that have a unique digestive system, allowing them to break down tough plant materials. They possess a specialized stomach with four compartments: the rumen, reticulum, omasum, and abomasum. This structure enables them to ferment and digest fibrous foods like grass and leaves efficiently. Common examples of ruminants include cows, sheep, goats, and deer. These animals typically regurgitate food, chew it again, and swallow it multiple times, a process known as rumination. This adaptation helps them extract maximum nutrients from their plant-based diet.