Research focuses on the ecology of sea turtles, including leatherbacks, loggerheads and Kemp's ridleys. Has investigated how leatherback turtles regulate body temperature in cold and warm waters. Has used satellite tracking devices to monitor movements of endangered sea turtles. Is working to establish a national conservation area in Costa Rica. Directing a graduate student to reintroduce peregrine falcons in Indiana.
Clinical pathology uses laboratory techniques to treat disease.
Was an expert witness for the U.S. Department of Justice on environmental and animal damage done by the 1989 Exxon Valdez oil spill in Alaska. Is a member of the American Society for Veterinary Clinical Pathologists, American Veterinary Medical Association and American Association for the Advancement of Science. Is a diplomate of the American College of Veterinary Pathologists. Started Purdue's Veterinary Cytology Resource Center, which houses a photograph and microscopic slide collection designed to train veterinarians in using a noninvasive technique, based on examining cells, to diagnose animal diseases. Has expertise in evaluating the immune systems of animals and directs a clinical immunology lab where he analyzes samples from animals across the country.