Catgut is a type of cord made from the natural fibers found in the intestines of animals, primarily sheep and goats. It has been used for centuries in various applications, including stringed instruments, surgical sutures, and tennis racquets. The name "catgut" is misleading, as it does not come from cats. The production of catgut involves cleaning and processing the intestines to create a strong, flexible material. It is valued for its durability and ability to hold tension, making it suitable for musical strings and medical uses. Today, synthetic alternatives are often used, but catgut remains popular in certain traditional contexts.