I would actually recommend looking into a program that will give you the best chance at getting into vet school or giving you a good lead on a Plan B. The more credit hours you rack up the harder it will be to get your GPA to budge. I know this from experience - I had originally earned a BS graduating in 4.5 years - went on to work and then changed my mind. Unfortunately my GPA was average - right around 3.0 - not good enough for vet school. I had to take additional pre reqs to even apply to as my original degree didn't have enough science. Because I already had a full academic career of credit hours - my GPA just never really moved - no matter how well I did in my classes.
I considered getting an additional bachelors degree but eventually changed my mind because it wasn't really setting me up for a Plan B and wasn't going to help me increase my GPA or set me apart. I decided to pursue my Master's degree - I found it difficult to get into a program that I was interested in because my GPA just wasn't competitive. I eventually found myself in a Pre Professional Non Thesis program that was designed to help improve students pursing professional degrees (med, vet, dental, pharm) beef up their application and prepare for the rigors of the professional curriculum. This program also has had success in helping students pursue careers in other science fields (so it was a good choice to help me pursue a Plan B if I needed one).
My GPA did not really move over the course of this program but it did give me the boost I needed to get into vet school. So its a course of action I recommend. I was accepted with an overall GPA of ~3.10.
Some of the best advice I received about my GPA was that vet schools like to know you can handle the difficult program once you get there - historically students with lower GPAs tend to struggle when they get there - so they like to see that you can handle the stress and rigor of the program. For me what worked was the Master's program in conjunction with working, volunteering, and building new relationships with professors to improve my references. For you it might be a different combination but the goal should be to prove to them that you are capable and will make a strong contribution to their program.
http://biology.iupui.edu/sites/default/files/binder1.pdf (this is the program I did - I highly recommend it or something like it - 4 of the 5 pre vet students I got to know in the program were accepted this year - so its a very successful program)
On a practical note - of course vet school is always the goal - but I highly recommend keeping Plan B in mind as well. Admissions committee's like to see applicants keeping practically in mind. It was one of the questions that was asked of me in my interview and I did have a pretty solid plan in mind in terms of an internship and job lined up (along with plans to apply again).
I would contact one of the universities you are interested in attending and see if you can get some advice from them on what they are looking for, talk with them about your potential plans and see what they have to offer.
Good luck!!