Question: what is the average size of a 4 month old kitten?
Answer: 3 month old kitten size: By the age of 3 months (12 weeks), your kitten should weigh between 2 and 4 pounds. They should be three to four times the size they were at birth. 4 month old kitten size: By the age of 4 months (16 weeks), your kitten should weigh between 4 and 5 pounds.