If you have any interest in a particular school, you may want to check out the online course offerings at that university. No guarantee you'll get into any school, of course, but it can't hurt to put yourself in a situation where your work will be evaluated by someone who teaches prevet undergrads as well as actual DVM students. (Check out CSU and OSU - Oregon... not sure if Ohio State has online courses, but worth looking into!)
Before you enroll in and fork over money to any course, however, please call or email someone in the admissions office of your top choice school(s) and ask to get feedback on the course you want to take. Often this can be achieved by sending along a copy of the syllabus. You absolutely want to make sure that the admissions committee at the school of your choice will look favorably on the course you want to take so that you don't waste your money or your time.