4 ms·They were not fed unnatural diets which caused them to produce a shitload of methane.by fzzzy 5y agoThey were not fed unnatural diets which caused them to produce a shitload of methane.gtirloni 5y agoCattle is Brazil roams free and eats grass.bogomipz 5y agoThis has traditionally been true for neighboring Argentina as well which is widely known for it's prized grass-fed Pampas cattle. My understanding is that this has been changing however in recent years.