25 old?!? HA!!
I'm 36.
36 old?! HA! I'm 43 and just about finishing my first semester, so don't talk to me about how you feel behind and it's so tough being non-trad.
OP, if it's your dream and you want it bad enough, you make it happen, screw "old." I have a totally unrelated BA, gave up a good career/stability/income/etc. to go back and start almost at square one in a new challenging career. If I can do it at my age (and believe me, I was never never a stellar student), you sure can.
Seriously, I don't mean to sound harsh, I'm more saying this jokingly, but really, you people in your late 20's are NOT old. Seriously. IMHO, late 20's is the ideal time to be going to vet school. You're a little more mature, a few years of life experience under your belts, profs will take you more seriously, and you will be taken more seriously and granted more assumed respect as a clinician in the real world if you at least look old enough to drink and shave.
KSU has an early admit program, so there are people in my class who did not even have to finish undergrad, like 20-21 yrs old. And in a way my hat's off to 'em - I wish I had been so motivated at that age. But a lot of these people have never lived on their own, paid their own bills, budgeted, voted, worked and dealt with bosses/coworkers/staff, really never been responsible for anything beyond getting good grades, and it's hard to take them seriously as future doctors. 'Course, there's a lot of time to grow up over the next few years.
My point is, if you're a non-trad embrace the experience you have that has gotten you where you are. It makes you a more rounded person, and that will only help you in vet school and in practice.