Kittens by 21 days old are usually able to start trying solid food, but their main source of nutrition is still breast milk or milk replacer. At this age, kittens' digestive systems are not yet fully developed, so their diet should be based on easily digestible foods and need to be fed in multiple portions to avoid indigestion.

When feeding solid food, you should choose food suitable for kittens, such as special milk powder for kittens, kittens Milk cakes, etc. These foods are usually easier for kittens to digest and absorb. At the same time, because kittens have a small stomach capacity, they need to eat small amounts and often, about 4-6 times a day.