Dr. Johnson received her veterinary degree from The Ohio State University, a PhD from the University of Missouri, and is a Diplomate of the American College of Veterinary Internal Medicine. She is the respiratory section editor for Current Veterinary Therapy and has written the second edition of her textbook entitled Canine and Feline Respiratory Medicine. Dr. Johnson is currently a Professor in the Department of Medicine & Epidemiology at the University of California, Davis.