When Will My Cat Reach Full Size?

Kitten owners may wonder when does a cat reach full size. Kittens of different cat breeds mature at different rates.

A general guideline for the maturity of domestic shorthair kittens, including American shorthair, is that they reach full size within the first three years, but often within the first two years. Some cat breeds mature much faster or slower than this.

The Singapura kitten matures rather quickly. A Singapura kitten usually reaches full size at fifteen to twenty-four months of age.

Chartreux kittens reach full adult size when they are about three years old. Kittens of the Somali cat breed are about eighteen months old when they reach full size.

Bengal and Savannah cats typically reach full size in two to three years. Some resources state that some Bengal cats take slightly longer to reach full size.

American Bobtail cats may be three years old before they reach full size. A hybrid of domestic cats and jungle cats known as Chausie cats can take two to three years to reach adult size.

Ragdoll kittens may take up to five years to reach full size. However, most Ragdoll kittens will reach full size when they are from three to four years of age.

Some cat breeds have similar maturity timeframes as the Ragdoll kittens. Turkish Van kittens can take three to five years to reach full size. Though it may take up to five years, Maine Coon kittens usually reach full size in three to four years.

One of the slowest maturing cat breeds is the Norwegian Forest cats. The Norwegian Forest kitten may take four to five years to reach full adult size. Siberian kittens may be five years old until they reach adult size.

Besides size, a kitten may have other physical changes as it matures. Kittens of the Egyptian Mau cat breed may be born with amber eyes, but the eyes turn green within eighteen months. Coat changes in color and texture are common among different cat breeds.

Neutering or spaying a kitten does not need to wait until the kitten reaches full size. Undesirable consequences can occur if spaying or neutering is delayed. Waiting to spay a female kitten increases its risk of mammary cancer. Male cats are more likely to develop spraying behavior if not neutered while young.

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