Maine Coons mature slowly. Most cats look "grown up" at around one year, but a Maine Coon's frame and chest only settle by about three — some males keep growing until four.
So we judge a cat not by a single number but by whether its growth curve is steady: fastest in the first four months, then gradually slower. Adults are often 6–9 kg for males and 4–6 kg for females, and larger-framed individuals more.
If you are considering a Maine Coon, think first about space, about waiting three or four years for it to mature, and about the time cost of shedding and grooming. Those matter far more than the breed itself.
