The term 'Horse Healer' is a job description for a veterinarian, which is abbreviated as 'VET' in three letters. A veterinarian is a professional who specializes in the diagnosis, treatment, and prevention of diseases and injuries in animals, particularly horses. They are also responsible for providing medical care to horses, including vaccinations, surgery, and other treatments. Horse healers must have a deep understanding of animal anatomy and physiology, as well as the ability to diagnose and treat a variety of ailments.