Ask the school. Some have programs which give undergrads the chance to work in research labs, with the actual jobs being determined by the researcher's evaluation of their skill level. It may just be cleaning cages and washing bottles or the equivalent, it may be more seriously assisting the research protocol, or it may start with the former and grow as you demonstrate that you have or can acquire the needed skills. It all depends on what that particular researcher is looking for and what you can offer them.
If this program exists, they'll be able to give you a list of who's currently looking for what. It's then up to you to contact them and interview for the position.
Some versions of this offer an academic credit or two; some pay at on-campus-undergraduate-job rates.
Again: only your school knows what's available at your school. First step is to ask whether it exists. If you're not sure which office might be in charge of this, I've found that the administrative assistants in the department office usually know just about everything about the school, or know who to ask.