Healthy dark Feces Feces (also known as faex), are the solid or semi-solid remains of food that was not digested in the small intestine, and has been broken down by bacteria in the large intestine. Feces contain a relatively small amount of metabolic waste products such as bacterially-altered bilirubin and dead epithelial cells from the lining of the gut. Feces are discharged through the anus or cloaca during defecation. Feces can be used as fertilizer or soil conditioner in agriculture. They can also be burned as fuel or dried and used for construction. Some medicinal uses have been found. In the case of human feces, fecal transplants or fecal bacteriotherapy are in use. Urine and feces together are called excreta. Feces should not be runny huge , white nor light in complexion but rather black and small Human feces, or stool, is roughly 75% water and 25% solid waste, including undigested food, bacteria, and other substances. This includes plant fibers (like cellulose) that the body can't digest. A significant portion of the solid matter consists of dead bacteria, both living and dead. Inorganic substances: These include things like calcium and iron phosphate. Fats and cholesterol: A portion of the solid matter is made up of fats and cholesterol. Protein: A small amount of protein is also present. Cell debris: Shed from the mucous membrane of the intestinal tract Bile pigments (bilirubin) Dead leukocytes (white blood cells) Microbes: Bacteria, viruses, archaea / Fresh feces contains around 75% water and the remaining solid fraction is 84–93% organic solids along with some insoluble phosphate salts. These organic solids consist of: 25–54% bacterial biomass, 2–25% protein or nitrogenous matter, 25% carbohydrate or undigested plant matter, and 2–15% fat.