I have two tanks running right now, one has 6 mice the other has 7. I have a couple extra boys I really like and kind of want to keep, but I know you should only have one male in each tank. Do they kill the babies/each other, what happens? I don't plan to keep more than one male per tank, I just don't have any more tanks right now since I went to two different cities and was only able to get two tank lids.
They smell horribly, but a few of them are really cute! I really like the gold ones!