"I originally had two male cavies in a single cage -- the Petco multi-level cage, which I also reviewed in November 2008 on this site. They seemed to do fine initially, but then one came down with a mite infestation. I separated them while the infested one was being treated. They seemed to miss one another while apart... or so it seemed to me.
Unfortunately, when I tried to put the two cavies back into the Petco cage, the larger male ended up assaulting the smaller male and actually drew blood. I guess while they were separated some territoriality developed. So I decided to get a new cage.
Anyway, this cage was on sale so I went with it, rather than purchase another Petco multi-level cage at full price. I have been happy with both cages. This cage lacks a ramp and second level, but that made it easier to put together, and I didn't have the same problem with flimsy parts and clamps. The cage is easy to clean and has attractive coloration. I would recommend it for 1 or 2 cavies (assuming they get along)."