what age do cats stop growing

Most cats stop noticeably growing around 12 months old, but many keep slowly filling out until about 18 months, and some large breeds can grow until around 2 years old.

Quick Scoop

• Most average house cats reach their adult size between 12–18 months.

• Females often finish growing a bit earlier, around 10–12 months, while males may keep growing closer to 18 months.

• Big breeds like Maine Coons and some other large cats can continue growing up to about 2 years of age (sometimes a bit more in individuals).

• After that, any “growth” is usually just weight gain rather than getting taller or longer.

If your cat is under a year, you can still expect some noticeable changes; past 18 months, most size changes are very gradual and subtle.

Bottom note: Information gathered from public forums or data available on the internet and portrayed here.