For cats 9 - 12 months of age: they may be fed 2 - 3 meals daily. Food: 1 titbit, 1 dry, 1 moist
For cats 12 - 36 months: Active cats should be fed 2-3 meals daily; food should consist of 1 titbit, 1 dry, 1 moist. Indoor and less active cats are fed 2 meals daily and are given 1 dry, 1 semi-moist or titbit.
For cats 3 - 5 years of age: Active cats are given 2 meals daily, food is usually 1 dry, 1 semi-moist or titbits.
Indoor, less active cats are fed once daily with completely dry food and small amounts of titbit treats.
For cats 5 years +: Active cats are fed twice daily with 1 complete dry or semi-moist food and 1 titbit while indoor, less active cats are fed once daily with a completely dry "mature cat" food and occasional titbit treats.
If a cat is given a healthy, balanced diet which includes complete cat food and fresh food; this usually suffices for all the vitamins and minerals it needs. However if the cat is physically or mentally stressed (recovering from an injury, surgery or pregnant cat, post natal) it would be advisable to add supplement to the diet.