To choose the right size, consider your dog’s breed, size, and activity level. For small dogs, look for runs that allow at least 2–3 times their body length so they can move comfortably. Larger or more active dogs need extra space to walk around and stretch, so opt for a longer and wider run. Always make sure your dog can stand, turn, and play freely. If you're unsure, our team can help you choose based on your dog's specific needs.