Poo, also known as feces or stool, is the solid waste that is expelled from the digestive system of humans and animals. It is composed of undigested food, bacteria, and cells shed from the lining of the intestines. The color, consistency, and odor of poo can vary based on diet, hydration, and overall health. The process of producing poo begins in the digestive system, where food is broken down and nutrients are absorbed. The remaining waste is then compacted in the large intestine before being eliminated through the anus. Regular bowel movements are important for maintaining good health and preventing issues like constipation.