Careers working with horses include professionals who care for and train horses, support staff, and those who offer instruction for riding and horse care. As an equine trainer, you prepare a young horse for riding or competition. Your duties as support staff member include working to clean the stable, barn, and stalls and feed the horses. Riders exercise horses and ride them during competitions. The responsibilities of a riding instructor involve teaching new riders to safely and effectively ride a horse. Finally, veterinarians and their assistants provide medical care for horses.