I have resisted the temptation to get a male pal for Winston since I am so afraid of them getting hurt, I'd be interested to know how having two males works out for you. Winston sometimes seems lonely, he chunters to himself and squeaks a lot when he is playing but I hang out with him a lot to make sure he is not too sad. I am thinking about introducing a female to him as I have two cages so could separate the males and females after the birth, but not sure if this is a good thing to do yet. Mice are so overpopulated I don't want to cause harm by bringing even more into the world. Maybe I should just adopt some girls and have them in the other cage?