Wood flooring is beautiful, but unfortunately gouges and scratches are really noticeable.
I have a few easy ways that you can eliminate them. For small scratches, get some shoe polish that matches the color of your floors. Dip a soft cloth into the polish and buff it over the scratch. For a deeper scratch or gouge, dip some superfine steel wool into some paste wax. Rub it into the mark, making sure to stay with the grain of the wood.