European Red Squirrel (IMAGE) University of Massachusetts Amherst Caption An international research team at UMass Amherst, the University of Aberdeen, Scotland, and others in Ireland report evidence that native pine martens are suppressing invasive gray squirrels in Scotland. Credit University of Aberdeen 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.