A topic I actually feel qualified to discuss....
🙂
Think broadly. Don't just look for jobs where you'll be under the constant watch of a veterinarian. I currently have a pre-vet/public health friend that is helping her local health department do summer mosquito sprayings. It might seem mundane, but it's public health experience that has relevance to animals and humans. (It's all about the spin.)
One summer I almost helped ODH collect ticks (sadly, I was living in the dorm and would have no where to live and nothing to drive come June).
StudentJobs.Gov
The above website is a good source of seasonal positions for students. If you search for "Animal Health Technician" or "Biological Science Technician" periodically, you'll hit on some cool sounding positions all over the US and, sometimes, abroad.
FYI; Emergency management is huge right now. Go to the Dept. of Homeland Security's website and take the free Incident Command Systems training modules. It's really boring, but people working in the government may be impressed by such foresight. You get certificates as proof of completion (DHS also uses your SSN to track your course credits).
Last summer I landed a cool internship with USDA-APHIS-Veterinary Services at headquarters. I learned a ton about federal response to animal health emergencies. It was also an amazing networking experience and I'm still overwhelmed with the people I met. Seriously, one night I had dinner at a yacht club with a group of veterinarians, one was from U. Maryland and I tried to place why she looked so damned familiar... then I found out. She's on the back of one of the VS pamphlets I've had for a few years sitting in my "career folder."
The Downside to the Job: While I listened about, talked about, researched animals eight hours a day, five days a week for three months, only thrice did I actually get to be in physical proximity to actual animals. If you like the one-on-one with the beasts, the local field office or diagnostic laboratory would be the way to go if pursuing something with APHIS.