The critters and that would disqualify you grandfather in and that would disqualify you can just work.
too much dont waste your money, get a real degree in biology or something more worthwhile dont shortchange yourself by getting yourself into such a limited JOB not to be confused with something that could be considered a career
I would add, first try and see if you will like it, and can handle blood and gore, poop, and puke. Really, get a job and see. Then decide to go to school for it.