The weight standard of newborn kitten is determined according to the time after birth. Generally speaking, it is normal for newborn kittens to have a birth weight of 85- 1 15g. In the first week after birth, the kitten's weight will increase 10- 15g every day. From the second week, the weight gain rate will gradually slow down, but it should still increase by about 20-30 grams every day. By the fourth week, kittens usually weigh 300-400 grams.
It should be noted that this is only a general weight standard, and the growth of each kitten may be different. If the kitten gains weight too slowly or too quickly, it may be necessary to consult a veterinarian for further evaluation and advice. In addition, besides weight, kitten's activity, appetite and mental state are also important indicators to judge its health status, which need to be considered comprehensively.