I am currently an undergraduate junior majoring in Microbiology and I was just accepted to Iowa State University Class of 2019. I had my prerequisites completed during the application cycle, so I applied to Iowa State CVM (my in-state school) for "practice". I knew that I did not want to take a gap year, so if I did not get in on my first try, I would just finish my fourth year of undergraduate coursework. I ended up being accepted, so I will not graduate with a bachelors degree (my friends tease me that I will be a college drop-out

). I was worried that not having a degree would put me at a disadvantage in my future career choices - like if down the road I chose to specialize or teach at a vet school. I asked as many vets as I could whether it would limit my future options.
Every single vet said that it would not be a problem - many said that they thought it was super smart to save a year of undergraduate money. The vet I worked for throughout high school never received his degree, one of ISU's Pre-Vet Club advisers does not have his bachelor's, AND
both the veterinarians who interviewed me for ISU CVM's interview process didn't have their bachelor degrees!!!
I was told from ISU admissions, advisers, and veterinarians that not having a degree would not be a problem - and they were correct. You can PM me if you have any other questions about applying early