Or HaChaim on Leviticus 11:4/אור החיים על ויקרא י״א:ד׳

1 ממעלי הגרה זממפריסי הפרסה, of those which chew the cud or only part the hoof, etc. According to Bechorot 6 the apparent duplication in these words is to teach that if an unborn animal which has parted hooves and chews the cud is found inside a mother-animal which belongs to a forbidden category, such an unborn animal may not be eaten. However, the plain meaning of the verse is as follows: the words "of the ones which chew the cud" i.e. the camel, or of "the ones which part the hoof," i.e the pig. The letter ו is not a conjunctive letter but has the same meaning as או, "or."