This has been brought up in the past, so you might want to search for it, but the quick answer is NO.
It doesn't matter what you major in (though some schools do look favorably on extra science courses above the pre-req), and it certainly does not matter whether you have a BA or BS. I have a BA in biology, and it totally didn't matter.
Hah. You only have a BA. How sad. Finally I can feel superior to you with my awesome BS in Economics. That's right a BS in economics. Read it and weep! Wharton, the education that keeps on giving . ha ha ha.
And I am sure if I had a BA I would never have gotten into vet school.
lol, that whole only allowing students to graduate with a BA thing at Wellesley certainly must've been a ploy to ensure that women stay inferior to men.
(I also have a BA in Biology, hasn't given me any problems so far. My undergrad does BAs for everything but fine arts, business, and exercise science, so there are even people out there with a BA in physics. I want to say I saw a school once that offered a BA in engineering even!)
My school offers either a BA or BS in biology. I'm getting a BS, but the only difference between the two is the BS requires us to take Calculus II (which I wanted to take anyway because I love math) and an extra biology elective (which I would have to take anyway for pre-reqs). However, I really don't think it will make a difference with vet school and I know a lot of people are just getting the BA even though we have a choice.