A Nylon dog collar is a piece of material which is placed around the neck of a dog to provide control over your it. Dog collars may also be used for the identification, fashion, or other purposes. Dog collars are often used in combination with a leash to give the better command, and a common option to a dog collar is a dog harness. In nylon dog collars you'll get a multiple choice of colors and hardware fittings. Dog collars are the most common means of directing your pet.