How big do Siberian cats get?
A. Siberian cats can get very large, although their size is a bit overrated. They are the 2nd largest cat, second to the Maine Coone. The average male cat weighs 14 – 15 pounds; females weigh 8 – 10 pounds. Most of their size is reached by the time they are 18 months old, but they can take up to 5 years to reach full maturity.