You can ask..
what it takes to come back and teach at the college 
what the teacher turnover/retention rate is 
how much do textbooks cost 
do you see HMOs becoming the future of veterinary medicine 
any plans to improve/upgrade the school 
what do they think the biggest obstacles to 1st years are 
how likely 4th years are to do externships or residencies...these are non-school specific, im sure you can come up with school specific question:
Does Dr. Smith regularly give symposiums? his area of research is so juicy.
I notice the college has a tradition of doing _____. Are there any 'secret insider' traditions (i.e. a yearly prom, or kareoke get togethers)?