Did you know that grass can have more protein than grain? Bob uses intensive grazing methods so the cows are run into a small pasture (paddock) to eat the top half of the grass. Then, depending on the size of the paddock, 1 or 2 or 3 days later they are run into the next paddock to eat the grass there. This way they are always getting new growth grass which is the best. The most nutritious.
Makes ya wanna eat a salad or something! :)