Foie gras is produced by force-feeding ducks and geese to enlarge their livers, a practice widely condemned by veterinary and animal welfare experts.
Gavage causes acute distress during tube insertion and chronic suffering from the grossly enlarged liver pressing on other organs. Birds show fear of approaching feeders, reduced mobility and respiratory distress. The enlarged liver constitutes a pathological state. Veterinary consensus is that the production method is inherently cruel regardless of management details.