Zimun

dough of dogs, if shepherds eat it too, challah obligation, make hamotzi blessing, birchas hamazon, Zimun, ok to bake it on yom tov, ok to make matzos for Pesach, the opposite if the shepherds won’t eat it, in either case it can become impure

qualifies as a witness? considered a male in regard to Temple service? counted as a male for Zimun?