I had built the new cage for my pigs, and I went and altered it because of a comment someone made that I had not thought about. I had made the top floor the same size as the bottom floor, and I didn't think about light not being able to reach the first floor because of the top floor blocking it. I felt it would be too dark down there. So, I went in and took out two panels on the top floor, so now it is more like a loft. I have a 2x5 grid cage, but on top only two of the 5 grids are 2 grids deep, the other 3 are one grid deep. So my question is this... On the three single grids, I put up side grids because I worried about my piggies falling down. Is this necessary? It makes the second floor seem more closed off and seems like a narrower path for them to run down than if there were no safety grids on top. The top floor isn't completed because I have to cut coroplast, so I don't even know if they will use the top floor anyhow. Does this make sense? I don't know how else to explain it. I would post a pic but I am not at home right now. Any help is appreciated, thanks!