Veterinary Pharmaceuticals is an important field for treating the medical problems of wild animals, domestic pets, working animals, and livestock. It has been traced back to Egyptian times in ancient writings which referred to animal hospitals. Today, animals are treated with the help of many advanced diagnostic and therapeutic techniques. Animals receive care medically, dentally, and surgically, which may include such procedures as hip replacements, cataract extractions, vaccinations, or root canals. Veterinarians also educate pet owners in caring for their pet, often through feeding or breeding.