Quote Originally Posted by Husky15
The answer to that I do not know, but I do know that if you get two males from the same batch at the pet-store or something, they will be fine.

And no problem.
That's not necessarily true. As I said in my above post I had a litter of almost all males and they did not get along at all. They were fine as babies, but once they were a little older every single pair had to be separated because of fighting.

As for their cage size, that may help, but don't count on it definitely working. Two of the pairs of 'my' male mice each had a 3 story wire cage that were more than adequate size of 2 mice (apparently just not 2 male mice).

A 20 gallon tank really isn't that much space. After you get a wheel, food and water dishes, and a house in it there really isn't too much room for much else.

I'm not trying to tell you not to get 2 male mice, just know that they may not work out together. I don't want you to be upset if you end up with 2 separate cages with 2 lone mice in them. It's always good to know ahead of time what could happen. Hope for the best but be prepared for the worst.