On average, the growth process stops around 10 to 12 months of age. They might become heavier and gain a bit of height after that, but largely, these cats reach maturity at age 1.

How big do Siamese cats get?

One of the best-known cat breeds, the Siamese is curious, smart, vocal and demanding. If you want a cat who will converse with you all day long, the Siamese may be your perfect match. The Siamese weighs six to 10 pounds and has a distinctive coat with dark “points” on a light background.

How long before a Siamese cat is fully grown?

On average, the growth process stops around 10 to 12 months of age. They might become heavier and gain a bit of height after that, but largely, these cats reach maturity at age 1.