How to see what ajax request is actually being submitted

I'm making ajax requests to controllers in ASP MVC 5 from JQuery. The requests are failing. However, if I put in the request by hand, for example /Sale/fillVarietiesSelect?speciesId=2, I get the correct response. I must be doing something wrong with my ajax request, but I can't see it. It would help me debug if I could see the actual request being made, but it doesn't show up in the URL bar (it is a GET request). Is there a way I can intercept or view the actual request?