Kittens typically weigh 2-3 kg at four months old. Larger kittens, such as Bengal cats and Maine Coons, will weigh more, around 3-4 kg. Smaller kittens, like Scottish Folds, will weigh around 2-2.5 kg. A kitten's weight is determined by its constitution and nutritional status. If it is well-nourished, its weight will increase, while if it is poorly nourished, its weight will decrease. 
When kittens are four months old, their nutritional needs are relatively high, so it is important to pay attention to a balanced diet and give them more protein-rich foods to help them grow healthier.
If the animal is too heavy, its diet needs to be controlled appropriately to prevent it from becoming too fat and affecting the development of its organs, or even its health.
