Halter

A halter, headcollar, or, less often, headstall, is headgear that is used to lead or tie up livestock and, occasionally, other animals; it fits behind the ears (behind the poll), and around the muzzle. To handle the animal, usually a lead rope or lead shank is attached. On smaller animals, such as dogs, a leash is attached to the halter.

Read more about Halter:  History, Uses, Construction, Horse Halters, Leading, Safety and Security Issues