Yes, if your dog runs on-leash in the harness. A tight fit (especially the chest strap) and inconsistent leash use without using a collar with the harness will also subject dogs to rubbing.
If your dog develops any sore spots, please stop using the harness and call us. We will go over fitting and methods to prevent rubbing. If you wish to provide extra protection for sensitive skin/short hair dogs, we suggest our SENSE-ation® harness (custom Softouch™, polyester girth strap). Otherwise, the following products can add extra protection: