SUMMARY
Beneficial effects of thermal mud treatment in the human medical field have been known for many years. However, such treatments have never been studied and used in veterinary science. The aim of our study was to investigate how a mud treatment from Héviz Spa Lake affects the movement quality and flexibility of certain joints in horses. Wet sludge was applied on the knee, hock, elbow, shoulder, back, stifle, front and hind cannons and fetlock joints for a period of eight weeks. Our results show, that the mud treatment from Lake Héviz may have beneficial effects on the joints, and play an important role in the locomotion of horses.