Touchscreen (IMAGE) University of Veterinary Medicine -- Vienna Caption The dogs were trained to touch symbols on a screen using their nose. Credit (Photo: Lisa Wallis/Vetmeduni Vienna) Usage Restrictions This photo may only be used in the context of this press 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.