Florcraft said:It's all relative.
Someone could have an AC3 lam, and trim the nails. They could probably live with an AC2.
Some have AC4 rated lam, and they do not trim the nails good or often, then they will complain that their lam scratches all the time.
Buy the best rated lam you can afford, buy area rugs and runners, trim the dogs nails as needed, and that's the best you can do.