If the video doesn't start playing momentarily, please install the latest version of Flash. The glands can be gently emptied, or expressed, with your fingers. So fistula surgery is usually a separate procedure that can be performed on an outpatient basis or with a short hospital stay. He may also give your cat extra fiber, which bulks up his poop, making it easier to pass. They use scent as a place marker, a communication device, and a personal ID card.