I just counted lol… 17 studs and 9 broods…. Ahhhh! Especially when the cool-down for studs is quicker it gets frustrating lol.

I'm new to the game and realized this too, 2 out of 8 foals I bred were fillies. If you look through a majority of the sales tabs the majority are stallions/colts as well. 

Funny, I've been getting 75% fillies!