Brown Bat Necropsy (image) US Geological Survey Share Print E-Mail Caption USGS pathologist Nancy Thomas and technician Dottie Johnson necropsy little brown bat at the USGS National Wildlife Health Center. Credit Allison Klein, NPS Usage Restrictions Usage: This image is public domain/of free use unless otherwise stated. Please refer to the USGS Copyright section for how to credit the photo. Share Print E-Mail 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.