The best way to approach is to talk to the admissions office of the colleges or universities that you are interested in applying to. Most of them will say take a science major to get into graduate school for veterinary degree. I have come across a student that took Animal Science for their major BA degree and I also know someone who is currently taking Biology and is then thinking of graduate school. Something that I found was that there are two veterinary graduate schools in California (Pomona and UC Davis). There could be more but I only came across two.