puppy blues (IMAGE) University of Helsinki Caption For many owners, caring for a puppy causes worry, fear and frustration, and forming an attachment to their dog can be difficult. However, the negative emotional content of memories of the puppyhood period does 'fade' over time. Credit mage: Kaisa Eskola Usage Restrictions Image: Kaisa Eskola License Original 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.