I just decided to take a look at Mercy's back side and I think he may be a she. When Mercy was smaller a few weeks ago, I couldn't tell because he or she had so much fur and it was gray. Well, looking at Mercy a few minutes ago, I think I goofed in my analysis. It would be really nice if Mercy is female because then I don't have to think about them spraying or reproducing. Since all of my males are fixed at this point, I wouldn't have to be concerned about them because the last thing I need is more cats. I wouldn't have taken these in if their lives weren't at stake.
Anyway, time and growth will tell for sure but if I'm right now, I have two little girls, which will make my life easier as they get older.