Dr. Killough's desire was to be a veterinarian when he was a small child living on a dairy farm in Indian Trail, North Carolina. Dr. Killough and his wife, Kay, graduated together from Indian Trail High School in 1961. After graduation, he was accepted to North Carolina State University, where he continued to pursue his dream of becoming a veterinarian. Since North Carolina did not have a school of veterinary medicine, Dr. Killough applied and was accepted at Oklahoma State University School of Veterinary Medicine. He received his Doctor of Veterinary Medicine degree in 1968.
After graduation, Dr. Killough was on the staff of Sandhill Veterinary Hospital in Southern Pines, North Carolina for four years. Dr. Cliff McLean and Dr. Joe Currie were the owners of this AAHA-accredited hospital. Dr. Killough always felt he received wonderful mentorship and guidance for his career in their hospital. Family ties brought the Killough's back to Charlotte in 1972, where they found a permanent home at Long Animal Hospital.
Dr. Forest B. Long was the founder of the hospital, which was established in 1948. He built the hospital on good service to his clients and dedication to the highest quality of veterinary medicine. Dr. Killough has always strived to provide the same high-quality medicine and customer service to his clients. Several years after being in partnership with Dr. Long, Dr. Killough purchased the hospital. Dr. Long continued to be a part of the hospital for many years until his retirement in 1987.
Dr. and Mrs. Killough have two children. Dr. Brian Killough is also a veterinarian and on the staff of Long Animal Hospital, which makes Dr. Killough, Sr. extremely proud! Kay Killough, and Judy Killough (wife of Dr. Brian Killough) are part of the management team. Kara Ruth King, the Killoughs' daughter, is a medical representative with St. Jude's heart division. They have four grandchildren: Jake Killough, Paul Killough, Hannah Killough, and Kara Grace King.