Pat, a piggie who has gas might vocalize a bit, sounding uncomfortable, or might have a tummy that feels a bit tight. Sometimes eating less will signal that gas is present. You might try giving Doris gentle tummy rubs and/or infant Simethicone. I believe the dose for the Simethicone is 0.3 ml. once a day. Hope this helps. Cindy, Tumbleweed, and Friday