At what age your Maine Coon kitten starts to grow it's shaggy coat can vary greatly. Some kittens develop coat almost immediately and look like miniature MC adults at 3 or 4 months, while others will start getting britches and belly fur around 6 months and a ruff will start to fill in as late as 1 year, provided the kitten has been altered before 8 months of age. Maine Coons get their adult fur in at age 2.
Maine Coons are very interactive with people. Around the ages of 6 months to a year old they can go through a cautious stage. This is called the teenager stage. As they mature they will become more like a lap cat and much more affectionate. This is usually around ages 2 to 3 years old. As a kitten they are very busy!
Do not be concerned if your cat doesn't look like a Maine Coon all at once. The variations of growth patterns are as varied as they are among different families of humans. No, not all MC's will look the same, but the classic shaggy coat, square muzzle and big expressive eyes will all come together eventually, the cat will be your loving and ever-present companion! You may be initially attracted to the Maine Coon for their rugged good looks, but you'll fall in love with the personality.