When does a Javanese stop growing?

A Javanese cat stops growing around 18 months of age. They may reach their full height a bit earlier, around their first birthday, but they’ll continue to fill out and develop muscle during this time. By the time they’re about a year and a half old, they’ve typically reached their full size and maturity. Once they reach 12 months old, you can switch them over to adult cat food to maintain their health and energy levels as they settle into adulthood.