@tsarstepan,
Thanks for the reply. My cousin has a cat, who has been neutered. However, it has grown too fat and is extremely aggressive and has even scratched my cousin and even me once, because as my cousin believes, it is the result of neutering. Also, he had been taken away from his mother when he was at a tender age to be raised by my cousin sister. So, is it possible to control such aggressive behavior in cats, if they are neutered?