Calf with Stomach Ulcers (IMAGE) University of Veterinary Medicine -- Vienna Caption Stomach ulcers weaken the animals and cause pain. Credit Photo: Alexandra Hund/Universitätsklinik für Wiederkäuer/Vetmeduni Vienna Usage Restrictions This photo may only be used in the context of this release. 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.