Over 83 of all cats are neutered or castrated this helps to protect and prevent unwanted pets however sterilisation and castration can alter the balance of hormones in your cat and interferes with the regulation of energy supply often making cats prone to obesity perfect fit sterile 1 rich in chicken is a delicious light dry cat food which your cat will adore perfect fit sterile 1 rich in chicken provides a balanced diet with all the nutrients neutered cats need perfect fit sterile 1