We have natural wood floors in our kitchen, dining room and entryway, and Heidi isn't allowed in there cause her nails scratch it SO bad. They leave big divits in the floor. The few times she has snuck in there, and then she runs out, her feet have slipped on it and scratched it. That may be just our wood floors though. I don't know. We are going to replace it with laminant, though, I think.