Pet collars and necklaces: Dogs go out for a walk, and cats also have a wandering nature. For their safety, it's best to put a collar on them. In the pet store, you can find collars and necklaces made of metal, nylon and leather. The metal is durable and the price is the lowest, but it will make the baby feel uncomfortable; the nylon is light and comfortable, the price is middle; the leather is luxurious and upscale. However, domestically produced goods are relatively hard, and imported products are soft and beautiful, but they are expensive.