Generally kitten weight by age are supposed to gain 4ozs. per week, but that does not always hold true. Many a kitten can weigh less for their age. Males tend to increase in weight until about 11 months of age, about four to eight weeks longer than female kittens do. Anyone know average kitten weight by age for the common domestic shorthair? I have found that full maturity takes about three years. What are the guidelines for telling your cat's age?..
