We raise Katahdin sheep, a breed that we selected for their ability to thrive on pasture. The flock follows our cattle herd in their rotation across pastures. Cattle act as dead-end hosts to sheep parasites when they precede the flock and tend to favor the taller grasses of the sward. The sheep don't mind this, as they tend to prefer the lower growing forbs, and are also happy to keep pasture "weeds" in check. This kind of complementary relationship works out great for both cattle and sheep.