No specific major is preferred by veterinary schools. There are, however, several prerequisites for admission to veterinary school, so it is advisable to research the schools you are considering in order to determine their prerequisites as early a possible. Please visit this website, http://aavmc.org/, which provides all the resources you will need.
GUIDELINES FOR FIRST-YEAR STUDENTS:
List of the most common prerequisites:
Some schools have a minimum GPA requirement for application. In order to remain competitive, students should keep their GPA at least 3.3 or above. The average GPA of students admitted to veterinary school varies from 3.5 to 3.8.
Standardized examinations: Most schools require that students take only the GRE general test. Some schools provide the option of taking the GRE, VCAT, or MCAT. Students should check the school to which they plan to apply in order to determine which test(s) they should take.
Animal Experience: It is important that students have experience that demonstrates their abilities handling animals, their understanding of their roles in society, and their overall interest in animals outside of veterinary medicine. Examples of animal experience include, but are not restricted to, involvement with the 4-H, handling in horse/dog/cat shows, raising of animals, working around farm animals, working in a pet shop, grooming, or working at a stable. The more diverse the experiences, the better.
Veterinary Experience: It is required that students have veterinary experience. This experience can be as a volunteer or as a paid employee. Veterinary schools are looking for applicants who have had extensive and diverse experience working with veterinarians. Students should have experience with large, small, and exotic animal medicine. Veterinary school applicants must have letters of recommendation from veterinarians.