There are a few things you can do to protect your hardwood floors from damage caused by your dog. First, you can purchase mats or rugs to put down in areas where your dog spends a lot of time. This will help protect the floors from scratches and wear. Secondly, you can train your dog not to jump on furniture or people to avoid scuffs and scratches. Finally, you should regularly clean your floors with a soft cloth or vacuum to remove dirt and debris.