'Cud' in the Bible

You may eat every animal with a divided hoof those with split cloven hooves that chews the cud.

However, you must not eat these animals that chew the cud or have a divided hoof: the camel, hare, and rock badger. Even though they chew the cud, their hooves are not divided. Therefore they are unclean for you.

And also the pig, because even though its hoof is divided, it does not chew the cud. It is therefore unclean for you. You must not eat their meat or even touch their carcasses.