That is so true. You are right about the cage being measured on the outside. I put in Savic Freddy and it said it could hold 4. I don't think I would put any more than 3 in there. But if you put the base size in and not the measurement of the widest part it says it can hold 3.Kimmiekins said:Figure at least 2 cubic feet *per* rat. The rat calculators give a good idea, but of course, they don't (well, most don't) take things like usable space vs. unusable space into consideration. Also, the dimensions for most cages are measured on the *outside*, which is NOT equal to the actual space the rat can use.
What kind of cage is it? We'd be able to help more if we knew.
lina said:I think If you change the measurements on the rat calculator from inches to centimeters it works better.