Susan Knowles is a Wildlife Veterinary Pathologist at the National Wildlife Health Center.
She earned a Doctorate of Veterinary Medicine from the Virginia-Maryland Regional College of Veterinary Medicine and completed a residency in veterinary pathology and earned a Doctorate in Veterinary Pathology from the University of Georgia. She is a Diplomate of the American College of Veterinary Pathologists. She joined the Center in 2013 and her interests include wildlife, aquatic, invertebrate and toxicologic pathology, and pathogen discovery. Before joining the Center, she gained a variety of experience in and around her native Maryland, performing research on shortnose sturgeon, serving as a Veterinary Officer in the United States Public Health Service stationed at the National Institutes of Health, and working as a Natural Resources Biologist for the Maryland Department of Natural Resources where she was a member of the Fish and Wildlife Health Program and served as the Marine Mammal and Sea Turtle Stranding Coordinator for the state.
2013 – Present Wildlife Veterinary Pathologist, U.S. Geological Survey, National Wildlife Health Center, Madison, WI
2006 – 2013 Resident of Anatomic and Aquatic Pathology and Graduate Assistant, Department of Veterinary Pathology, University of Georgia, Athens, GA
2003 – 2003 Veterinary Officer, Junior COSTEP, United States Public Health Service, Rockville, MD stationed at NIH, Diagnostic and Research Services Branch, Veterinary Pathology, Bethesda, MD
1996 – 2002 Natural Resources Biologist, Maryland Marine Mammal & Sea Turtle Stranding Coordinator, Fish and Wildlife Health Program, Maryland Department of Natural Resources, Cooperative Oxford Laboratory, Oxford, MD
1995 – 1996 Histology Technician, Maryland Department of Natural Resources, Cooperative Oxford Laboratory, Oxford, MD
Education and Certifications
Ph.D. Veterinary Pathology, University of Georgia, 2013
D.V.M., Virginia-Maryland Regional College of Veterinary Medicine, 2006
B.S. Biology, Bucknell University, 1995
Affiliations and Memberships
Diplomate American College of Veterinary Pathologists
Science and Products
Science and Products
Pre-USGS PublicationsSalter CE, O’Donnell K, Sutton DA, Marancik DP, Knowles S, Clauss TM, Berliner AL, Camus AC: Dermatitis and systemic mycosis in a group of lined seahorses Hippocampus erectus associated with a marine-adapted pathogen within the Fusarium solani species complex. Dis Aquat Org 101(1):23-31, 2012.Page-Karjian A, Knowles S, Howerth E, Berliner A, Clauss T, Hyatt M, Camus A: Pathology in practice. J Am Vet Med Assoc 241(9):1159-1161, 2012.Knowles S, Blas-Machado U, Butler AM, Gomez-Ibañez SE, Lowder MQ, Fayrer-Hosken RA: Ameloblastic fibro-odontoma associated with a retained molar in an Oldenburg mare. J Vet Diagn Invest 22:987-990, 2010.Knowles S, Uhl EW, Blas-Machado U, Butler AM: Intrapericardial ectopic thyroid carcinoma in a cat. J Vet Diagn Invest 22:1010-1013, 2010.Brown YK, Knowles S, Fiorello CV, Camus MS, Howerth EW: Pathology in practice. Morphologic diagnosis: Uterine adenocarcinoma with metastasis to the lungs, diaphragm, spleen, mesentery, and cecum. J Am Vet Med Assoc 237:1257-1259, 2010.Knowles S, Hrubec TC, Smith SA, Bakal RS: Hematology and plasma chemistry reference intervals for cultured shortnose sturgeon (Acipenser brevirostrum). Vet Clin Pathol 35:434-440, 2006.Blanchard TW, Santiago NT, Lipscomb TP, Garber RL, McFee WE, Knowles S: Two novel alphaherpesviruses associated with fatal disseminated infections in Atlantic bottlenose dolphins. J Wild Dis 37:297-305, 2001.Evans JJ, Norden A, Cresswell F, Insley K, and Knowles S: Marine sea turtle strandings in Maryland, 1991 to 1995. The Maryland Naturalist 41:23-34, 1997.