Dr. DeJaynes was born and raised in Burlington, Iowa, and from an early age knew that he wanted to be a veterinarian. He studied biology at Iowa State University as an undergraduate prior to being accepted into their veterinary medicine program in 2004. He graduated from Iowa State University College of Veterinary Medicine in 2008.
Following graduation, Dr. DeJaynes spent two years as a small animal general practitioner in Iowa prior to pursuing advanced training. He completed a small animal surgery and medicine internship at a large referral hospital in Denver, Colorado in 2011. After finishing his rotating internship, Dr. DeJaynes then completed a year-long, intense small animal surgical internship at a large specialty hospital in New York where he gained invaluable knowledge and training in emergency and elective surgery.