Your Guinea Pig's Home Obtaining suitable housing for your new pet is the first step in preparing for your guinea pig's stay in your home. Safe bedding, ample room and a proper cage design are all essential for providing your cavy with a place where he or she can feel safe and secure. Although it is possible to house two guinea pigs in three square feet, this should be considered maximum crowding, and should be a temporary situation until a larger cage can be obtained. You should never, ever house a guinea pig in a cage with a wire bottom.
Guinea pigs can very easily get their feet caught in the wire mesh, and break their limbs.
Ferret cages, in particular, look attractive to many new guinea pig owners because of their size and multiple levels, but the wire mesh bottoms make them completely unsuitable, and very dangerous. Try to find a cage with a removable bottom pan, if you opt for a commercial cage. It makes cage cleaning very easy. One of the advantages of a cage with a side doorway, however, is that it makes it possible for you to open the cage up to the room, and let your guinea pig wander in and out at will. Large Aquariums can be used as cages, but be aware that they are more difficult to clean thoroughly and provide little to no air circulation through the cage.