A harness isn't just a fashion statement — it's a tool that directly affects your dog's comfort, safety, and long-term physical development. Especially for puppies and small breeds, the wrong harness can cause more than just discomfort — it can lead to restricted movement, improper bone growth, or even rib fractures. In this guide, we'll explore how to choose the right dog harness that supports your pet's health at every stage of growth.