Really Mangey Bear (IMAGE) Penn State Caption A highly contagious skin disease resulting in hair loss and sometimes emaciation and death -- caused by parasitic mites -- mange has grown common and severe in Pennsylvania black bears in recent years. To find out why, a small group of biologists, immunologists and entomologists in the College of Agricultural Sciences will study bear ecology, movement and immune response Credit Pennsylvania Game Commision Usage Restrictions Non commercial use only 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.