It really didn't. Essentially every vegetable you have ever eaten is the product of millennia of genetic modification by humans and is completely unrecognizable relative to its natural form. Cabbage, broccoli, kale, and collard greens are all horrifically mutated forms of a single natural species, engineered specifically for mass human consumption. Compare this to animals: livestock are of course influenced by husbandry but not anywhere near the same extent. One can easily match livestock to their natural forms; e.g. chicken to junglefowl; cattle to other bovine species; domesticated hogs to wild hogs. Probably none of these species is more changed than, say, the domestic dog so it's not even clear one can attribute the changes to the needs of human consumption as one does with vegetables.
If the naturality argument holds water, then it in no way points us to the produce aisle, but rather to the butcher's.