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A veterinarian or a vet, is someone who gives animals Veterinary medicine or medical treatment. They are doctors for animals. There are many different types of veterinarians; some work with small animals, large farm animals, or wild animals. Veterinarians learn to treat all animals, but sometimes work with a specific type. Other veterinarians specialise in a particular type of medicine - for example, veterinary dermatologists work with animals with skin problems. Finally, some veterinarians do research on animal or human diseases.
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.