Aidan Showing (IMAGE) Max Planck Institute of Geoanthropology Caption Besitzer beeinflussen, wie gut Hunde ein verstecktes Spielzeug anzeigen. Credit Theresa Epperlein Usage Restrictions Please provide credit information with reuse 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.