Any time your horse is being aggressive and moves toward the cow, using the flight zone to dictate her speed and the balance point to keep her moving in the direction you want, he moves offensively.
If the cow challenges your horse by trying to return to the herd, the horse should hold or give ground, resisting the urge to move forward. This is assuming a defensive position, blocking the cow enough times that she submits to his control, which we get to later in the book.
– Martin Black
Cow-Horse Confidence gives an inside look at Black’s time-honored techniques for working horses and cattle.