Grooming (IMAGE) Duke University Caption Baboons take turns grooming each other to make friends and cement social bonds. A new study finds that baboon friendships influence the microscopic bacteria in their guts. Credit Photo by Elizabeth Miller, University of Notre Dame. 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.