gap between coroplast base and cage?

Yes, there is a small gap to let the coroplast sit inside the connectors.

Did you baby-proof your cage?

Thanks for the reply. I didn't know anything about baby-proofing the cage, but have been reading up and will probably just add more coroplast. We were going to build a partial second level with a ramp. Is that safe for a guinea pig of this age?

There are other threads on baby-proofing, but the main ways to do it are to use overlapping grids so the holes are effectively smaller or to extend the coroplast up to 10 inches. You can also stick cardboard between the grids and coroplast.

Yes, you can build a second level and ramp. It might take them some time to use it, so make sure you have food on the main level too for a while. Use a surface they can grip and put sides and maybe a top on the ramp.

Are you planning on adopting her a friend? This is strongly recommended as pigs are social animals and should be kept in pairs or groups. Keep in mind that they would benefit from a larger cage and that the ramp to the second level will take away space on the main level for running.

We hope to eventually get a companion for her, but live in a very remote area and are at least 6 hours away from the nearest rescue.

Thanks for all your help!

I see. I'm sure something will come up eventually.

Have fun finishing up the cage!