Golden Hamster (IMAGE) Society for Experimental Biology Caption Cooler temperatures cause increased milk output in mammals such as hamsters. Credit Sarah A. Ohrnberger (Research Institute of Wildlife Ecology, University of Veterinary Medicine, Vienna, Austria) 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.