Researcher with a Labrador retriever (IMAGE) University of Cambridge Caption All Labradors and flatcoated retrievers are highly food-motivated. But dogs with the genetic mutation face a double whammy: they not only want to eat more, but also need fewer calories because they’re not burning them off as fast. Credit University of Cambridge Usage Restrictions With credit 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.