Veterinarians diagnose and treat diseases in all animals, including household pets like dogs and cats, as well as animals on farms or at the zoo. In order to become a veterinarian, you must go to college and earn a bachelor’s degree. While at college, most future veterinarians study biology, chemistry, physics, nutrition, and animal
science. Next, you must attend veterinary college. Even after becoming a certified veterinarian, most continue taking classes to learn about new diseases and treatments. Veterinarians are lifelong learners.