Marble floors aren’t ideal for pets and pet parents because it’s very sensitive to acid, so young puppies or older dogs with bladder issues can quickly damage the floors, leaving unsightly stains and etching. Further, marble floors are susceptible to scratches, with dog and cat paws leaving unwanted marks on the tile. If you want a stone floor that’s ideal for pets, consider slate. Slate flooring costs around $4 to $10 per square foot. On the other hand, dogs that are afraid of harder-surface floors would do better with carpet.