Input (grade 13): The animals most commonly slaughtered for food are cattle (for beef and veal), sheep (for lamb and mutton), pigs (for pork), horses (for horsemeat), goats (for chevon), and fowl, largely chickens, turkeys, and ducks, for poultry meat.
Output (grade 11): The animals most often slaughtered for food are cows (for beef and veal), sheep (for lamb and mutton), pigs (for pork), fowl (for chicken), and horses (for horsemeat).