I'm glad you asked this question, becuase we have been trying to make the same decision. We were concerned with three young, active dogs, that hardwood or Pergo would get easily sctraching up and ruined, but from what I have heard it doesn't seem to be the case. ( I have also heard this from someone with a Bernese Mountain Dog) I think we may stick to carpet inthe living room, but do wood in the dining room.