felidae: cats; wildcats; lions; leopards; cheetahs; saber-toothed tigers
mammal family: a family of mammals
liver: large and complicated reddish-brown glandular organ located in the upper right portion of the abdominal cavity; secretes bile and functions in metabolism of protein and carbohydrate and fat; synthesizes substances involved in the clotting of the blood; synthesizes vitamin A; detoxifies poisonous substances and breaks down worn-out erythrocytes