Ultrasound is a diagnostic imaging technique utilizing reflected high-frequency sound waves to delineate, measure, or examine internal soft tissue body structures or organs. It is a very valuable instrument used for investigating, diagnosing and monitoring lameness due to tendon, ligament and joint injuries. Ultrasound is also very useful for examining other soft tissues including the thorax and abdomen. The presence of fluid in the thorax as well as the surface of the lungs and the heart can be evaluated. Because intestinal dilation and wall thickness along with the presence of free fluid can all be assessed via ultrasound, it can be particularly useful for evaluating the abdomen as part of the work-up of colic cases. In addition, ultrasound is useful for transabdominal assessment of established pregnancies without the need for a rectal examination. Our GE digital ultrasound system produces very high quality images.