Pony Girl(1985)

Under the direction of a wealthy pervert, young women are being kidnapped, shipped off to a remote ranch and forced to submit and behave like horses by a whip-wielding dominatrix. This shot-on-video thriller with just R-rated nudity is noteworthy as one of the only non-porn films Traci Lords appeared in prior to the discovery of true age. She co-stars along with future Scream Queen Michelle Bauer.