Royal Canin 4 kg Feline Health Nutrition SterilisedAfter your cat has been neutered, a change of diet may be required to ensure that the nutrients it consumes supports its somewhat altered energy needs. ROYAL CANIN Sterilised 37 contains a moderate level of fat when served in adequate daily rations this helps your cat to maintain an ideal bodyweight after it's been sterilised. What's more, ROYAL CANIN Sterilised 37 food also contains a carefully considered balance of minerals that help to support and