Sterilised Kitten jelly Wet Food For Cat Complete feed for cats - Specially for neutered kittens (from 6 to 12 months old) (thin slices in jelly). Sterilised kittens between the ages of 6 and 12 months go through a time of major physical and behavioural development. It is, therefore, important to ensure your kitty gets all the nutrients they need daily to grow into a healthy, strong adult cat. These pouches include soft wet cat food covered in gravy that strengthens your kitten's immune system and assists in weight control and growth.