A leash is a flexible strap or cord used to control and restrain an animal, typically a dog. It is usually attached to a collar or harness worn by the animal, allowing the owner to guide or prevent the animal from wandering too far. Leashes come in various materials, such as nylon, leather, or chain, and can vary in length and width to suit different sizes and breeds of animals. Leashes are essential for ensuring the safety of pets and others in public spaces. They help prevent animals from running into traffic or approaching strangers. Additionally, using a leash can promote good behavior during walks, making it easier for owners to manage their pets while enjoying outdoor activities.