Hi guys a quick question for you,do people keep there Rat and Mice breeding colonies in the same room? I do but have started having problems with the Rats! I started off breeding the Rats with no probs then i added mice colonies in the same room and they started breeding way better than the rats!! so my mice colony increased from 1 cage to 12 cages! The rats have started eating young not feeding young etc.. and i'm wondering if its the smell of the mice putting them off?? Feeding has not changed or anything else just the mice coloney has increased? I've tried younger Rat females and the same thing happens! i'm running 1.2 Rats per tub.