Ultrasound uses sound waves to noninvasively evaluate the abdominal organs and the heart. This technology is a routine diagnostic tool that complements radiographic examination and allows better evaluation of the internal structures of these organs. Ultrasound is also used to evaluate the eye and surrounding structures as well as soft tissues around the spine and extremities. Ultrasound examination of the tendons and muscles of the legs of horses is also a valuable tool for lameness evaluation. Very detailed cross-sectional images can be obtained for preliminary diagnosis as well as guidance for biopsy for more definitive. Ultrasound is essential for the best evaluation of cardiac problems such as congenital diseases and acquired problems in diagnosis older patients. We have state-of-the-art machines in both the large animal and small animal hospitals.