In layman's terms, they appear to chew the cud. The fact that scientists insist now it is not chewing the cud is an issue for scientists, not anyone else.
Are you saying here that the KJV should not be interpreted scientifically?
I mean some things don't need to be harped on. You can pick up the meaning while keeping the same terms. For example, when the Bible speaks of a man "knowing his wife" or "laid with her", we don't really need to retranslate the term and say, "had sex", do we?
If you were unfamiliar with Biblical language, you'd probably need to have it explained. So this was an idiom in Hebrew, where "chewing the cud" meant "looking as though chewing a cud"?
PE