Our neighbor had 2 horses i believe the size of the pasture is 2 acres. about a month ago another 2 horses were brought in. they are never fed hay during summer months. the pasture is eaten down to nothing right now and today he threw over all his grass clippings from mowing the lawn which i thought was a no no. I have been super busy and haven't had a chance to get a good look at the horses to see their condition but i think that there are too many horses on the land. How much space do horses need if only grazing?