History of Animals
Equine dentistry was practiced as long ago as 600 BCE in China, and has long been important as a method of assessing the age of a horse. This was also practiced in ancient Greece, with many scholars making notes about equine dentistry, including Aristotle with an account of periodontal disease in horses in his History of Animals, and in Rome with Vegetius writing about equine dentistry in his manuscript "The Veterinary Art".