Am I able to get a guinea pig here?

Why not call and find out?

You would have to call to see if they have any, and I'm sure if they have any you could. I have gotten an Iguana from there before so, I'm pretty sure that if they have something like that, you should be able to get one. You might want to check PetSmart and there is a pet shop on Jefferson highway that I'm more than sure they have guinea pigs there I don't remember the name of it but it's on Jefferson highway.