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.
Halters may be as old as the early domestication of animals, and their history is not as well studied as that of the bridle or hackamore. The word "halter" derives from the Germanic words meaning "that by which anything is held." 
A halter is used to lead and tie up an animal. It is used on many different types of livestock. Halters are most closely associated with Equidae such as horses, donkeys, and mules. However, they are also used on farm animals such as cattle and goats and other working animals such as camels, llamas, and yaks. Halters generally are not used on elephants or on predators, though there are halters made for dogs.
Halters are often plain in design, used as working equipment on a daily basis. In addition to the halter, a lead line, lead shank or lead rope is required to actually lead or tie the animal. It is most often attached to the halter at a point under the jaw, or less often, at the cheek, usually with a snap, but occasionally spliced directly onto the halter. A standard working lead rope is approximately 9 to 12 feet (2.7 to 3.7 m) long.
However, specially designed halters, sometimes highly decorated, are used for in-hand or "halter" classes at horse shows and in other livestock shows. When an animal is shown in an exhibition, the show halter is fitted more closely than a working halter and may have a lead shank that tightens on the head so that commands from the handler may be more discreetly transmitted by means of the leadline. A shank that tightens on the animal's head when pulled is not used for tying the animal.
Halters are designed to catch, hold, lead and tie animals, and nothing else. However, some people ride horses using a halter instead of a bridle. In most cases, it is not safe to ride in an ordinary stable halter because it fits loosely and provides no leverage to the rider should a horse panic or bolt. It is particularly unsafe if the lead rope is used as a single rein, attached to the leading ring under the jaw.
Halters may be classified into two broad categories, depending on whether the material used is flat or round. Materials include cured leather, rawhide, rope, and many different fibers, including nylon, polyester, cotton, and jute. Leather and rawhide may be flat or rolled. Fibers may be woven into flat webbing or twisted into round rope. Flat or round dictates the construction method: flat materials normally are sewn to buckles or rings at attachment points; round materials are knotted or spliced. Knotted halters often are made from a single piece of rope.
Horse halters are sometimes confused with a bridle. The primary difference between a halter and a bridle is that a halter is used by a handler on the ground to lead or tie up an animal, but a bridle is generally used by a person who is riding or driving an animal that has been trained in this use. A halter is safer than a bridle for tying, as the bit of a bridle may injure the horse's mouth if the horse sets back while tied with a bridle, and in addition, many bridles are made of lighter materials and will break. On the other hand, a bridle offers more precise control.
One common halter design is made of either flat nylon webbing or flat leather, has a noseband that passes around the muzzle with one ring under the jaw, usually used to attach a lead rope, and two rings on either side of the head. The noseband is usually adjusted to lie about halfway between the end of the cheekbones and the corners of the mouth, crossing over the strong, bony part of the face. The noseband connects to a cheekpiece on either side that go up next to the cheekbone to meet with a ring on either side that usually is placed just above the level of the eye. These rings meet the throatlatch and the crownpiece. The crownpiece is a long strap on the right-hand side of the halter that goes up behind the ears, over the poll and is buckled to a shorter strap coming up from the left. The throatlatch goes under the throat, and sometimes has a snap or clip that allows the halter to be removed in a manner similar to the bridle. Many halters have another short strap connecting the noseband and the throatlatch.
The halter design made of rope also has the same basic sections, but usually is joined by knots instead of sewn into rings. Most designs have no metal parts, other than, in some cases, a metal ring under the jaw where the lead rope snaps, or, occasionally, a recessed hook attachment where the crownpiece can be connected. However, in many cases, a loop is formed in the left side of the crownpiece and the right side of the crownpiece simply is brought over the horse's head, through the loop and tied with a sheet bend.
In addition to the halter, usually a lead (lead line, lead rope) or leash is used to lead or tie the animal. The lead is attached to the halter most often at a point under the jaw, less often at the cheek, and rarely above the nose. On horses, a lighter version of a headcollar or headstall is also used to attach a fly veil of waxed cotton strands or light leather strips onto a browband. Some Fly masks are also made in a similar pattern to a headcollar and are often fastened with velcro tabs. These masks may also have ear and nose protection added to them. On both horses and dogs, halters may be used to attach a muzzle.
Safety and security issues
For tying, it is disputed if a halter should be made strong enough not to break under stress, or if it should give way when tension reaches a certain point in order to prevent injury to the animal. Usually the issue is of minimal concern if a tied animal is attended, and the lead rope is tied with a slip knot that can be quickly released if the animal panics. However, in cases where a non-slip knot is tied, or a soft rope is drawn tight and the knot cannot be released, or if the animal is left unsupervised, an animal panicking and attempting to escape can be seriously injured. Those who argue that the risk of injury is more of a concern than the risk of escape recommend halter designs that incorporate breakaway elements, such as a leather crownpiece, breakaway buckles, or easily detachable lead rope. Those who believe that escape is the greater danger, (the consequences being animal disappearance or possible injury to the animal or by the animal) or who have concerns that an animal that learns to break loose will be unable to be kept tied at all, recommend sturdy designs that will not release unless the handler deliberately releases a slipknot or cuts the rope. Between the two camps are those who recommend sturdy halters that will not break under normal pulling back by a recalcitrant or frightened animal, but ultimately will break in a true panic situation, such as a fall.
Some users have the animal wear a halter at all times, even when stalled or turned out. Others have the animal wear a halter only when being led, held, or tied. The advantages of leaving a halter on are that the animal is often easier to catch. The disadvantages are that an animal may catch the halter on an object and become trapped or injured in some fashion. While experts advise leaving halters off when animals are turned out, if halters are left on unattended animals, breakaway designs that still will hold for everyday leading are recommended.
- ↑ Oxford English Dictionary, [halter: (n)] Online edition, accessed February 20, 2008.
- ↑ 2.0 2.1 Loch, Wayne. "Haltering and Tying Horses." Department of Animal Sciences, University of Missouri Extension. G2844, revised August 2002. Web site accessed March 19, 2008
- ↑ Diane Longanecker (2002). Halter-tying success: A Step-by-step Guide to Making Hand-tied, Rope Halters for Horses. William Eaton. p. 134. ISBN 0963532065, 9780963532060. http://books.google.com/books?id=3H4Lg4HCC1EC. Retrieved 2008-10-14.
- ↑ Description of rope halter design and how to tie one. Web page accessed March 17, 2008
- ↑ web storefront
- ↑ Horse Journal Staff (November 2008). "Safety Halters for Turnout". Horse Journal 15 (11): pp.6–8.