I think you mean Neutered? :P Well cat's get Neutered because
the owner does not wish for the cat to get other female cats
pregnant. Neutering is for Male cats and Spaying is for Female
Cats. If you would like to breed cats, then don't get them
neutered/spayed! If you do not get your cat neutered, it doesn't
mean that it's going to get female cats pregnant, you'll just have
to keep a close eye on them. I have noticed that when a cat is in
heat, it gets rather annoying! But that's just me! :)