I wont have 2 males in the breeding cage anyways, but feel free to discuss it here. I have no problems with that.

So when it comes to caging, do you think a 16,5 long, 10 wide and 6 inches high cage is big enough for 1.4 rats? It is the second largest breeding cage we got here in Sweden. In cm it is 42 long, 26 wide and 16 high. What do you think?