Meat is mainly composed of water, protein, and fat. It is edible raw, but is normally eaten after it has been cooked and seasoned or processed in a variety of ways. Unprocessed meat will spoil or rot within hours or days as a result of infection with and decomposition by bacteria and fungi.
Most often, meat refers to skeletal muscle and associated fat and other tissues, but it may also describe other edible tissues such as offal. Meat is sometimes also used in a more restrictive sense to mean the flesh of mammalian species (pigs, cattle, lambs )