Black bear caught on camera trap (IMAGE) North Carolina State University Caption Black bears, like the one caught here by a camera trap in Michigan, have a surprisingly simple microbial ecosystem in their guts. Whereas many animals harbor diverse ecosystems that vary across the gut, the black bear's seems to be remarkably uniform. This raises some interesting questions and opportunities for researchers. Credit Diana Lafferty, Northern Michigan University Usage Restrictions Photo credit must be given. 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.