By Christine R. Maher, Ph.D., Professor of Biology, University of Southern MaineBritney Evangelista, B.S. Department of Biology, University of Southern MaineAnne Lichtenwalner, DVM, Ph.D., University of Maine Cooperative ExtensionCarly Sponarski, Ph.D., Assistant Professor of Human Dimensions of Wildlife and Fisheries Conservation, University of Maine For information about UMaine Extension programs and resources, visit extension.umaine.edu.Find more