rule of thumb the bigger the better, and as much floor time that you could give that bunny. I have a dutch rabbit and she is in a c&c cage that is 2 grids wide, 3 grids long and two story hig, the second story is a shelf. I have a pen attatched and she gets out all day from about 8 am to about 9 pm so that size is fine, if i was to not be able to let her out all day i would defintely make the cage bigger. She is now sharing that cage with her husbun who is a lop, and i am not at this time making the cage bigger, but feel it is ok because they are allowed out all day long.
Would it be possible to make a bunny cage underneath my guinea pig cage? I would have 3 sows living in a 2x5. If under that was a two-level 2x5 bunny cage, would that work? I am thinking a small breed, dwarf rabbit or mini-lop.
Absolutely, that is how mine is. I have the rabbit cage and then on top of that is the guinea pig cage. you would have to make sure a 2 x 5 cage is secure enough not to cave in, maybe by using Dowl rods down the middle, or across the cage in a few spots. When i made my cage i noticed that the connectors that they include in the grids work better then just zip tieing them , but of course i zip tie on top of using the connectors, for extra enforcement. here is a copy of a link that this question was posed before and i posted a picture of my set up, it is a simple basic setup and nothing near as elaborate and beautiful as ihave seen here, but it serves its purpose.