Adam Clarke on Deuteronomy 14:4

These are the beasts which ye shall eat - On Leviticus 11. I have entered into considerable detail relative to the clean and unclean animals there mentioned. For the general subject, the reader is referred to the notes on that chapter; but as there are particulars mentioned here which Moses does not introduce in Leviticus, it will be necessary to consider them in this place.

The ox - שור shor: Bos, fifth order Pecora, of the genus Mammalia, species 41. This term includes all clean animals of the beeve kind; not only the ox properly so called, but also the bull, the cow, heifer, and calf.

The sheep - שה seh: Ovis, fifth order Pecora, of the genus Mammalia, species 40; including the ram, the wether, the ewe, and the lamb.

The goat - עז az: Capra, fifth order Pecora, of the genus Mammalia, species 39; including the he-goat, she-goat, and kid. The words in the text, שה כשבים seh chesabim, signify the lamb or young of sheep; and שה עזים seh izzim, the young or kid of goats: but this is a Hebrew idiom which signifies every creature of the genus, as בן אנוש ben enosh and בן אדם ben adam, son of man, signify any human being. See Psa 144:3; Job 25:6.

The flesh of these animals is universally allowed to be the most wholesome and nutritive. They live on the very best vegetables; and having several stomachs, their food is well concocted, and the chyle formed from it the most pure because the best elaborated, as it is well refined before it enters into the blood. On ruminating or chewing the cud, see the note on Lev 11:3.