I have a question concerning my "carpet shark" Sophia. I clip Sophia's nails about every two weeks. Lately, Sophia's nails have been splitting along the sides and bottom during these nail-clipping sessions. I have been careful to cut the nails cleanly and use only sharp nail clippers, but this problem persists. Does anyone know what may cause this and what I can do about it? [Posted in FML issue 1194]