When Will My Cat Reach Full Size?

By Moses Wright

Many kitten owners may ask, "When does a cat reach full size?" Kittens have different growth rates and reach maturity of different times depending on the cat breed of the kitten.

American shorthair kittens typically reach full size within the first three years and often within the first two years. Several cat breeds mature faster or slower than American shorthair kittens.

A Singapura kitten is one of the fastest maturing cat breeds. Singapura kittens reach full size when they are between fifteen and twenty-four months old.

A Somali kitten reaches full adult size by the time it is eighteen months old. Chartreux kittens are about three years old when they reach adult 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.

It is possible for a Ragdoll kitten to take up to five years to reach full size. Most Ragdoll kittens reach full size in three to four years.

Kittens of some cat breeds reach full size in the same timeframe as Ragdoll kittens. Maine Coon kittens typically take three to four years, but may take up to five years to reach full size. Turkish Van kittens can take up to five years to be full size.

Norwegian Forest cats are a slow-maturing cat breed. The kittens may be four or five years old before they reach adult size. Siberian kittens may take five years to reach adult size.

Some cat breeds go through other physical changes besides size while they are kittens. Egyptian Mau kittens may be born with amber eyes, but the eyes turn green by the time the kitten is about eighteen months old. Many cat breeds experience changes in their coats and coloring as they mature.

Kitten owners should not wait until a kitten is completely mature before spaying or neutering the kitten. A delay of spaying or neutering can lead to undesirable behavior, unwanted kittens, and an increase in some cancers for female cats. - 29955

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