I'm just pointing out that the level of exploitation you apply into something play the biggest role in making it green or not.

What was the green way to raise cattle (asking as a cheeseburger lover). I don't see any real way to do so. Seaweed in their feed is a good way to reduce methane production I've read but I've never raised cattle, just a few hens in the backyard for eggs. They roam around eat the bugs, weeds, grass, etc but are all around an easy pet(?) to have.

5 hens, no roosters, roughly 2 dozen eggs a week. Obviously supplement with feed but care is easy. Hose down the coop on the outside, and replace pine chips which last a decent bit, but they compost/biodegrade and with chicken shit on them I think using them for mulch in the garden should be good for the garden as well..... The chickens may eat your garden though haha