Due to their durable material, dog collars turn out to be quite long-lasting. Many dog parents attest to using their dog's collar for up to at least three years. In addition, the washable, weatherproof, and durable material minimizes wear and tear, reducing collar replacement expenses. However, if your canine has outgrown its previous collar, the life span becomes irrelevant and you'll need to purchase a bigger one that'll comfortably fit them.