Foie gras production involves force-feeding ducks and geese to enlarge their livers, a practice widely condemned as causing significant suffering and banned in many countries.
Foie gras production causes suffering through the process of forced feeding and the consequences of extreme hepatomegaly. Birds undergoing gavage show avoidance of the feeder, difficulty walking, and lesions from repeated tube insertion. The enlarged liver impairs breathing and mobility. The scientific evidence base for foie gras causing suffering is sufficiently strong that multiple veterinary associations have called for bans. Consumer choices and import restrictions are powerful levers given that most countries import rather than produce foie gras domestically.