By Daniel Kelley PHILADELPHIA, Jan 23 (Reuters) - As many as three ferrets kept as household pets attacked a one-month-old infant girl in her suburban Philadelphia home, and the child was reported on Friday to have undergone surgery for severe injuries to her face. The baby had been left unattended in a car seat on the floor of the same living room where the three ferrets were kept caged in an enclosure made of fabric and soft mesh when the mauling occurred on Thursday, according to local media reports.