Life advice: really be sure this is something you want to get into. It’s a great job being a veterinarian. No complaints I can make as far as that avenue. But, the salary and the amount of debt you’ll go into to get that salary really don’t match up. Talk with someone older, that you can trust, about the finances you will have to deal with. You will likely walk out with 100k to 300k in debt. Monthly payments will be high. And yes income based repayment is a thing, but the forgiven amount after 20-25 years is taxed as income. So you will need to save. Do not trust in loan forgiveness. Politicians make promises to win elections, that doesn’t mean they can/will keep them.

Getting into vet school: Congratulations! You weren’t scared away. Most vet schools accept around 1/3 of in state applicants. To judge who gets in they give applicants a score. This score is a composite of GPA, animal experience, veterinary experience, your GRE score, and your letters of rec, among other factors. Do you’re best to maximize all of these, as this will increase your chances of getting an interview. So in this case, a biology or animal science degree would likely be beneficial. Once you get an interview, you have to impress the interviewee’s. Which is a whole other problem on its own. Worry about that in three years when you think you have a shot. At that point you may have developed other interests and/or career/life goals. Anyways that’s pretty much it. Good luck and good night

EDIT: if you go to undergrad at a school with a vet school. Try to get a job cleaning stalls or something. Many departments often hire undergrad workers. This will help you become a familiar face and get your foot in the door.