8. Veterinarians are doctors for animals. Admission to veterinary school is actually much more difficult than admission to medical school. Once in veterinary school, the amount and type of training is "is equal to what medical school students receive - but for a number of animal species instead of just one," as the American Veterinary Medicine Association likes to say. Just like medical doctors, vets continue to their training after they receive their degrees, and just like medical doctors, they must obtain a state license to practice. Despite these similarities, the average veterinarian in North Carolina earns about $108,000 per year compared to the average medical doctor who earns about $198,000 per year (according to figure at indeed.com). If the skills and training requirements are so similar, why do medical doctors earn nearly twice as much per year as veterinarians? This is not a research question. You may speculate about the answer, using the concepts we have introduced this week.