Oh I have the same problem here, since i learned more about Kittycats and started lines I get females from the same line for many weeks till i finally get a male, and it pisses me off, sometimes i get males when I need a female but that's rare.
if you look at the total number you will see it almost even but that's because I had to get rid of many females by selling or menagering, plus that I get way more females in certain lines which is very frustrating
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but I think if gender was on boxes it would get so easier and we would get less excited about our lines, so I want it and I don't at the same time, but I know it won't happen anyway