Thats not true, everybody who have a more than one Cat, or have many Cats in the neighborhood knows that.
Really?
And in the Nature it is normal that the new pascha kill all young animals who are not from him.
I don't know what a pascha is, but it is true that it is something common for some species. I was mainly thinking about sexually mature females in what I said.
I can always be wrong; my appologies if it is the case.