Shop for dog collars and leashes. Dog collars and leads are a basic yet important pet accessory. Nylon dog collars ,leads, and harnesses are the most popular because they are versatile, easy to keep clean and can be thrown in the washing machine. Leather collars are a little more fancy and over time, are very comfortable for your dog. Decorative Dog collars with studs, spikes or rhinestones add a little bling to your pup. Light up and reflective dog collars can add an element of safety and piece of mind for dog walks at night.