It's not an uncommon problem among cat owners: Just as you're settling into sleep you're awoken by the thundering of cat paws racing around the house, jumping over furniture or batting at toys. Or, less subtle cats might spend the night meowing on your bed, nipping at your toes, or walking on your face. Dr. Jane Brunt, executive director of the CATalyst Council and past president of the American Association of Feline Practitioners, offers tips on how to keep our otherwise nocturnal cats on the day shift.