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A leash (also called a lead, lead line or tether) is a rope or similar material attached to the neck or head of an animal for restraint or control. On the animal, some leashes clip or tie to a collar, harness, or halter, while others go directly around the animal's neck. ==Types of leashes== For dogs, leashes take many forms; for example: * A simple metal chain. * Very short tab leashes; a clip attached to a loop handle or to a short piece of leather with a knot or similar short handle. Allows very close, tight control of a dog in certain competition or training situations. * Short, soft, braided leather leash with a loop handle and a clip to attach to the collar, usually about 4 feet in length, commonly used during obedience training. The softness enables the trainer to fold the leash into a shorter length and the braiding allows a firmer grip. * Nylon webbing leash, also known as a tracking/training leash in the UK, usually 4 to 6 feet, with a loop handle and clip, most commonly used for walking dogs casually. * Extended-length webbing leashes, 12 to 30 feet or more, also known as a tracking/training leash in the UK, usually with a loop handle and a clip, primarily for training at a distance or during tracking sessions. * Slip-leash, usually with a loop handle and an adjustable, slipping loop at the other end that goes around the dog's neck. Often used in work or competitions—such as dog agility—where the leash must be quickly removed and replaced. * Retractable, a hook on a thin rope that retracts automatically into a large plastic handle, allowing the dog to wander 15 or 25 feet away while keeping the leash taut (in theory preventing it from tangling around obstacles or the dog's legs) but still allowing the handler to reel in the dog for closer control. There are also bicycle dog leashes, especially designed for people who enjoy taking their pet in a ride with the bike. The leash is an aluminum tube with a plastic coated cable which runs down through the tube. It extends out of the tube end a couple of feet to allow for ease of movement for the dog. One end connects to the bike and the other to the dog's collar. This keeps them safely away the bike.〔(【引用サイトリンク】 title=Comparing Bicycle-mounted Leashes )〕 Cat leashes and harnesses are also available on the market and are convenient for people who are not comfortable letting their pet free.〔(【引用サイトリンク】 title=Cat Leash and Harness Devices )〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「leash」の詳細全文を読む スポンサード リンク
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