However, the process by which grass and fiber is broken up in the stomachs of cows and other grazing ruminants has a byproduct, methane, a potent greenhouse gas.
Like goats, cows are ruminants, which means their stomachs have four chambers, allowing them to chew, digest and regurgitate their food multiple times.
Guess he has to deal with it every Bovidae and while he doesn't leave much ruminant for the cars passing by, it seems he's able to huff if they get too close.