In 1963, the State of Israel instituted a law prohibiting the raising of pigs on Jewish farms. According to Jewish law, one is not allowed to make his livelihood by dealing in non-kosher products. Beyond this, the Talmud states that one should not raise a pig, even as a pet. Why such great opposition against the pig? The answer may be rooted in the fact that the pig is the only animal in the world possessing the outward symbol of kosher (split hooves), but not the inward symbol (chewing cud). The pig therefore represents that which is kosher in outward appearance, but is in fact unclean on the inside. This type of hypocrisy is described by the Talmud as one of the behaviors that God most detests. For that moral reason, the pig is universally viewed as reprehensible to the Jew.