John C. Duncan, Ph.D., professor, specializes in anatomy, human development and anatomy, and cell biology. He has been a PUC faculty member since 2000, and before that taught biology at the University of Delaware. He is interested in gene regulation during development, reef aquariums, and science fiction.

Floyd E. Hayes, Ph.D., professor, is a zoologist specializing in the ecology, behavior and biogeography of birds. While an undergraduate student, Dr. Hayes took off a year to teach in an elementary school on the island of Kosrae in Micronesia. He worked for three years as a vertebrate biologist for the US Peace Corps, based in the National Museum of Natural History of Paraguay. He also taught biology for nine years at Caribbean Union College (now University of the Southern Caribbean) and the University of the West Indies in Trinidad and Tobago, and spent a year working as a wildlife biologist for the Division of Fish and Wildlife in St. Thomas, US Virgin Islands. Dr. Hayes has been editor in chief of Journal of Caribbean Ornithology since 2005. He enjoys birding, rock climbing and snorkeling.

Shelton S. Herbert, Ph.D., associate professor of biology, has taught at PUC since 2011. He specializes in immunology and animal behavior with emphasis in herpetology, and advises students in the areas of biology and medicine. Dr. Herbert has coauthored several articles on venom expenditure and continues to do research on various behaviors of rattlesnakes, including what affects the amount of venom expended by rattlesnakes during a bite. As an adjunct professor, he has taught courses at several other California institutions before coming to PUC, including Loma Linda University, Mt. San Antonio College, and Crafton Hills College. He enjoys amateur radio (KB4BZT), photography, SCUBA, classical music, rock climbing, backpacking, and co-teaching field biology trips to Alaska.

Bryan D. Ness, Ph.D., professor, has been at PUC since 1989. His research interests include plant systematics and genetics. He advises in the areas of biology, natural science, veterinary medicine, medical radiography and occupational therapy.

Dr. Backil Sung has been at PUC since 2012. He has degrees in medicine (M.D.), physiology (M.S.), and medical biotechnology (Ph.D). He has authored or co-authored 39 scientific papers in neuroscience, mainly in the area of pain mechanisms. He has also authored two book chapters, and frequently goes on medical mission trips. He teaches Neurobiology, Microbiology, Medical Microbiology and Biological Foundations.

Robin E. Vance, Ph.D., professor, has taught at PUC since 2001. He specializes in physiology and neurobiology. Dr. Vance's research interests include Antimutagenesis & Anticarcinogenesis, and he advises in the areas of biology and medicine. He taught at Union College for twelve years and chaired their Division of Science & Mathematics from 1996 to 2000. He enjoys tennis, walking and snorkeling.

Aimee Wyrick, associate professor, specializes in ecology, herpetology and paleontology. She advises in biology, pre-dentistry and pre-dental hygiene. Her research interests include physical and biological influences on the Columbia spotted frog and plant taphonomy. Aimee has also worked as a research coordinator, instructor, and course coordinator for the University of Montana. Her other interests include gourmet cooking (with produce from her own garden), national parks, camping and hiking, road trips, and world music – all enjoyed with her husband, Greg.