To become a vet in North America, you must go to college for at least 2 or 3 years, and take several required classes, including many science classes. You then apply to veterinary school. If you are accepted, you are in veterinary school for 4 years, and then graduate with the degree Doctor of Veterinary Medicine. In the United States and Canada, you have to pass a test (called the NAVLE or North American Veterinary Licensing Exam) before you can practice as a veterinarian. In other countries such as Australia, veterinary schools are 5 years long and take students that have finished high school. In iraq, veterinary schools are 5 years long and take students that have finished high schools.