The manufacturer claims that works excellent on horses and can also be used to clean saddle pads. You don't need to worry about damaging your horse's skin with Groom Ninja.When used correctly it will not cut skin. The Groom Ninja is not a shaving tool but a shedding, grooming  and cleaning  tool. It removes hair, dirt and dander year round. It does not cut or shave fur or hair. For horses is recommend the combo pack of all three existing sizes of the Groom Ninja for different parts of the horse.