Dr. Gary D. Norsworthy is a 1972 graduate of Texas A&M University. He practiced for two years at the Cat Clinic of Seattle, Washington. He practiced small-animal medicine from 1974 to 1999 in San Antonio, Texas, and then opened a feline-only practice in San Antonio in early 2000. Dr. Norsworthy is also an accomplished author, editor, and lecturer. He has presented more than 300 lectures at veterinary conferences across the country.