German shepherd puppies (IMAGE) Clemson University Caption The German shepherd dog is predisposed to congenital idiopathic mega esophagus, an inherited disorder in where a puppy developed an enlarged esophagus that fails to move food into the stomach. Credit none Usage Restrictions none License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.