Dog-Human Interaction (IMAGE) Max Planck Institute of Geoanthropology Caption Dogs use facial expressions and body language to communicate with conspecifics and humans. Credit Sylvio Tüpke 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.