海里的,除了带鳍的有鳞的鱼,其他的也不能吃 Question: I was wondering, why can't Jews eat pork or crab? Answer: In the Bible, G‑d lists two requirements for an animal to be kosher ( fit to eat) for a Jew: Animals must chew their cud and have split hooves. Pigs do have split hooves but do not chew their cud, so we cannot eat pig meat and its derivatives. In the seafood department, we may only eat fish that have both fins and scales. Here is a translation of the original Divine command, from Deuteronomy, Chapter 14:8-10: And the pig, because it has a split hoof, but does not chew the cud; it is unclean for you. You shall neither eat of their flesh nor touch their carcass. These you may eat of all that are in the waters; all that have fins and scales, you may eat. But whatever does not have fins and scales, you shall not eat; it is unclean for you.