I don't work in that field, but here are a few ideas:
- contact the proper dept at the college and ask; they must have a database from the scholarship days!
- contact the Vet Association for your state
- ask YOUR vet! and the vet techs who work there, and the office manager! Heck, you pay them enough for the pets' care, why not?? The office managers are the ones who handle work-study programs, sumer internships and so forth. They will have SOME contacts, even if just a stepping stone to the right person.
- be sure to look for scholarships for WOMEN as well; often those are not specific to a field of study.

Best wishes!