1)
Having written "Kol Behemtam", why does the Torah need to add "ve'es Kol Mikneihem"?
1.
Oznayim la'Torah: Every landowner has animals, for working the land, milk (and transporation). "Mikneh" is a term that pertains to animals that one rears as a livelihood. 1
1
Oznayim la'Torah: See for example, Vayishlach Bereishis, 34:23 and Vayigash Bereishis, 46:34.