 There are some residual effects. And so if in the rare instance, it is quite rare, you get an all-female litter, three or four all-female kittens, their whole character is quite different. They're much gentler. They're much less rumbustious and rambunctious in their play. Really? A litter with males and females in. The females sort of imitate the males for a while, and then they become female properly when they're a few months old.