The linea alba is the line of ligament connecting the rectus abdominus together down the median line of the cat's belly. It is a specialized ligament connecting muscle to muscle and is therefore known as an aponeurosa. It is represented in this picture as just under the number 3; the dotted line. This is the area that animals are generally cut into for OHE and neuter procedures, along with other abdominal procedures. The linea alba helps compress the organs of the abdomen in.