A Mare and Her Newborn Foal (image) University of Veterinary Medicine -- Vienna Caption Foaling appears to cause the opposite of a stress response. Credit Photo: Vetmeduni Vienna Usage Restrictions This photo may only be used in the context of this press release. 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.