How do I know if a horse I am buying is a headshaker?

During the warmer days of the spring or summer, during the fly season, lightly brush your hand along the flank of the horse. The panniculus muscles of the skin should flick with a distinct ripple. If the ripple is present, then the horse should be thoroughly exercised until the coat is damp with sweat from head to tail. If the sweat is present and there is no headshaking then that is a good indication that the horse is not a headshaker.

At other cooler times of the year it is not possible to say whether a horse is a headshaker or not. If the seller is assuring you that the horse is sound then this should be put in writing as a strict condition of sale.

If the horse really is sound but later develops headshaking, this can now easily be dealt with by a course of Equiwinner.